DK1676913T3 - Alpha-amylase variants - Google Patents

Description

DESCRIPTION

FIELD OF THE INVENTION

[0001] The present invention relates to novel variants of parent Termamyl-like α-amylases with altered properties relative of the parent alpha-amylase. Said properties include increased stability, e.g., at acidic pH, e.g., at low calcium concentrations and/or high temperatures. Such variants are suitable for a number of applications, in particular, industrial starch processing (e.g., starch liquefaction or saccharification).

BACKGROUND OF THE INVENTION

[0002] a-Amylases (a-1,4-glucan-4-glucanohydrolases, EC 3.2.1.1) constitute a group of enzymes which catalyze hydrolysis of starch and other linear and branched 1,4-glucosidic oligo- and polysaccharides.

[0003] There is a very extensive body of patent and scientific literature relating to this industrially very important class of enzymes. A number of a-amylase such as Termamyl-like α-amylases variants are known from, e.g., WO 90/11352, WO 95/10603, WO 95/26397, WO 96/23873, WO98/26078, W097/41213, W099/19467 and WO 96/23874.

[0004] WO 96/23874 provides the three-dimensional, X-ray crystal structural data for a Termamyl-like a-amylase which consists of the 300 N-terminal amino acid residues of the B. amyloliquefaciens α-amylase and amino acids 301-483 of the C-terminal end of the B. licheniformis α-amylase comprising the amino acid sequence (the latter being available commercially under the tradename Termamyl™), and which is thus closely related to the industrially important Bacillus α-amylases (which in the present context are embraced within the meaning of the term "Termamyl-like α-amylases", and which include, inter alia, the B. licheniformis, B. amyloliquefaciens and B. stearothermophilus α-amylases). WO 96/23874 further describes methodology for designing, on the basis of an analysis of the structure of a parent Termamyl-like α-amylase, variants of the parent Termamyl-like α-amylase which exhibit altered properties relative to the parent. W096/23873 and W097/41213 disclose variants of Termamyl-like alpha-amylases having improved properties selected e.g., from thermal stability, oxidation stability, reduced Ca2+ dependency. WO98/26078 discloses variants of Bacillus amyloliquefaciens alpha-amylases having a substitution in a position corresponding to position 201.

BRIEF DISCLOSURE OF THE INVENTION

[0005] The present invention relates to variants of a Termamyl-like α-amylase, wherein 1. (a) the variant comprises one or more of the following substitutions: E376K; S417T; A420Q or R; S356A; or Y358F and further K176R+I201F+ H205N using the numbering in SEQ ID NO: 4, wherein the parent Termamyl-like alpha-amylase has a degree of identity to SEQ ID NO: 4 of at least 80%, and 2. (b) the variant has alpha-amylase activity and further the variants have and an increased stability at pH below 7.0, and/or at calcium concentrations below 1mM at temperatures in the range from 95°C to 160°C relative to the parent Termamyl-like alpha-amylase.The variants are advantageous in connection with, e.g., the industrial processing of starch (starch liquefaction, saccharification and the like) as described in US Patent No. 3,912,590 and EP patent publications Nos. 252,730 and 63,909.

Starch conversion [0006] A "traditional" starch conversion process degrading starch to lower molecular weight carbohydrate components such as sugars or fat replacers includes a debranching step. "Starch to sugar" conversion [0007] In the case of converting starch into a sugar the starch is depolymerized. A such depolymerization process consists of a pretreatment step and two or three consecutive process steps, viz. a liquefaction process, a saccharification process and dependent on the desired end product optionally an isomerization process.

Pre-treatment of native starch [0008] Native starch consists of microscopic granules which are insoluble in water at room temperature. When an aqueous starch slurry is heated, the granules swell and eventually burst, dispersing the starch molecules into the solution. During this "gelatinization" process there is a dramatic increase in viscosity. As the solids level is 30-40% in a typically industrial process, the starch has to be thinned or "liquefied" so that it can be handled. This reduction in viscosity is today mostly obtained by enzymatic degradation.

Liquefaction [0009] During the liquefaction step, the long chained starch is degraded into branched and linear shorter units (maltodextrins) by an α-amylase {e.g., Termamyl™ SEQ ID NO: 4 herein). The liquefaction process is carried out at 105-110°C for 5 to 10 minutes followed by 1-2 hours at 95°C. The pH lies between 5.5 and 6.2. In order to ensure an optimal enzyme stability under these conditions, 1 mM of calcium is added (40 ppm free calcium ions). After this treatment the liquefied starch will have a "dextrose equivalent" (DE) of 10-15.

Saccharification [0010] After the liquefaction process the maltodextrins are converted into dextrose by addition of a glucoamylase (e.g., AMG™) and a debranching enzyme, such as an isoamylase (US Patent 4,335,208) or a pullulanase {e.g., Promozyme™) (US Patent 4,560,651). Before this step the pH is reduced to a value below 4.5, maintaining the high temperature (above 95°C) to inactivate the liquefying α-amylase to reduce the formation of short oligosaccharide called "panose precursors" which cannot be hydrolyzed properly by the debranching enzyme.

[0011] The temperature is lowered to 60°C, and glucoamylase and debranching enzyme are added. The saccharification process proceeds for 24-72 hours.

[0012] Normally, when denaturing the α-amylase after the liquefaction step about 0.2-0.5% of the saccharification product is the branched trisaccharide 62-a-glucosyl maltose (panose) which cannot be degraded by a pullulanase. If active amylase from the liquefaction step is present during saccharification (i.e., no denaturing), this level can be as high as 1-2%, which is highly undesirable as it lowers the saccharification yield significantly.

Isomerization [0013] When the desired final sugar product is e.g. high fructose syrup the dextrose syrup may be converted into fructose.

[0014] After the saccharification process the pH is increased to a value in the range of 6-8, preferably pH 7.5, and the calcium is removed by ion exchange. The dextrose syrup is then converted into high fructose syrup using, e.g., an immmobilized glucoseisomerase (such as Sweetzyme™).

[0015] In the context of the invention the term "acidic pH" means a pH below 7.0, especially below the pH range in which industrial starch liquefaction processes are traditionally performed, as described above, which is between pH 5.5 and 6.2.

[0016] In the context of the present invention the term "low Calcium concentration" means concentrations below the normal level used in traditional industrial starch liquefaction processes, such as between 0-40 ppm, preferably between 10-30 ppm, such as between 15-25 ppm Calcium. Normal concentrations vary depending of the concentration of free Ca2+ in the corn. Normally a dosage corresponding to 1mM (40ppm) is added which together with the level in corn gives between 40 and 60 ppm free Ca^+ [0017] In the context of the invention the term "high temperature" means temperatures between 95 and 160°C, especially the temperature range in which industrial starch liquefaction processes are normally performed, which is between 95 and 105°C.

[0018] The invention further relates to DNA constructs encoding variants of the invention, to methods for preparing variants of the invention, and to the use of variants of the invention, alone or in combination with other a-amylolytic enzymes, in various industrial processes, in particular starch liquefaction.

Nomenclature [0019] In the present description and claims, the conventional one-letter and three-letter codes for amino acid residues are used. For ease of reference, α-amylase variants of the invention are described by use of the following nomenclature:

Original amino acid(s):position(s):substituted amino acid(s) [0020] According to this nomenclature, for instance the substitution of alanine for asparagine in position 30 is shown as:

Ala30Asn or A30N a deletion of alanine in the same position is shown as:

Ala30* or A30* and insertion of an additional amino acid residue, such as lysine, is shown as:

Ala30AlaLys or A30AK

[0021] A deletion of a consecutive stretch of amino acid residues, such as amino acid residues 30-33, is indicated as (30-33)* or Δ(Α30-Ν33).

[0022] Where a specific α-amylase contains a "deletion" in comparison with other α-amylases and an insertion is made in such a position this is indicated as:

*36Asp or *36D for insertion of an aspartic acid in position 36 Multiple mutations are separated by plus signs, i.e.: [0023] Ala30Asp + Glu34Ser or A30N+E34S representing mutations in positions 30 and 34 substituting alanine and glutamic acid for asparagine and serine, respectively. Multiple mutation may also be separated as follows, i.e., meaning the same as the plus sign:

Ala30Asp/Glu34Ser or A30N/E34S

[0024] When one or more alternative amino acid residues may be inserted in a given position it is indicated as A30N.E or

A30Nor A30E

[0025] Furthermore, when a position suitable for modification is identified herein without any specific modification being suggested, it is to be understood that any amino acid residue may be substituted for the amino acid residue present in the position. Thus, for instance, when a modification of an alanine in position 30 is mentioned, but not specified, it is to be understood that the alanine may be deleted or substituted for any other amino acid, i.e., any one of: R,N,D,A,C,Q,E,G,H,I,L,K,M,F,P,S,T,W,Y,V.

BRIEF DESCRIPTION OF THE DRAWING

[0026] Figure 1 is an alignment of the amino acid sequences of six parent Termamyl-like a-amylases in the context of the invention. The numbers on the Extreme left designate the respective amino acid sequences as follows: 1: SEQ ID NO: 2, 2: amylase 3: SEQ ID NO: 1, 4: SEQ ID NO: 5, 5: SEQ ID NO: 4, 6: SEQ ID NO: 3.

Figure 2 shows the PCR strategy used in Example 1. DETAILED DISCLOSURE OF THE INVENTION The Termamvl-like a-amvlase [0027] It is well known that a number of a-amylases produced by Bacillus spp. are highly homologous on the amino acid level. For instance, the B. licheniformis a-amylase comprising the amino acid sequence shown in SEQ ID NO: 4 (commercially available as Termamyl™) has been found to be about 89% homologous with the B. amyloliquefaciens a-amylase comprising the amino acid sequence shown in SEQ ID NO: 5 and about 79% homologous with the B. stearothermophilus α-amylase comprising the amino acid sequence shown in SEQ ID NO: 3. Further homologous α-amylases include an α-amylase derived from a strain of the Bacillus sp. NCIB 12289, NCIB 12512, NCIB 12513 or DSM 9375, all of which are described in detail in WO 95/26397, and the a-amylase described by Tsukamoto et al., Biochemical and Biophysical Research Communications, 151 (1988), pp. 25-31.

[0028] Still further homologous α-amylases include the α-amylase produced by the B. licheniformis strain described in EP 0252666 (ATCC 27811), and the α-amylases identified in WO 91/00353 and WO 94/18314. Other commercial Termamyl-like B. licheniformis α-amylases are Optitherm™ and Takatherm™ (available from Solvay), Maxamyl™ (available from Gist-brocades/Genencor), Spezym AA™ and Spezyme Delta AA™ (available from Genencor), and Keistase™ (available from Daiwa).

[0029] Because of the substantial homology found between these α-amylases, they are considered to belong to the same class of α-amylases, namely the class of "Termamyl-like a-amylases".

[0030] Accordingly, in the present context, the term "Termamyl-like α-amylase" is intended to indicate an α-amylase which, at the amino acid level, exhibits a substantial homology to Termamyl™, i.e., the B. licheniformis α-amylase having the amino acid sequence shown in SEQ ID NO: 4 herein. In other words, a Termamyl-like α-amylase is an α-amylase which has the amino acid sequence shown in SEQ ID NOS: 1, 2, 3, 4, 5, 6, 7 or 8 herein, and the amino acid sequence shown in SEQ ID NO: 1 of WO 95/26397 (the same as the amino acid sequence shown as SEQ ID NO: 7 herein) or in SEQ ID NO: 2 of WO 95/26397 (the same as the amino acid sequence shown as SEQ ID NO: 8 herein) or in Tsukamoto et al., 1988, (which amino acid sequence is shown in SEQ ID NO: 6 herein) or i) which displays at least 80%, especially at least 85%, especially preferred at least 90%, especially at least 95%, even especially more preferred at least 97%, especially at least 99% homology with at least one of said amino acid sequences shown in SEQ ID NOS 1: or 2 or 3 or 4 or 5 or 6 or 7 or 8 and/or ii) displays immunological cross-reactivity with an antibody raised against one or more of said α-amylases, and/or iii) is encoded by a DNA sequence which hybridizes, under the low to very high stringency conditions (said conditions described below) to the DNA sequences encoding the above-specified a-amylases which are apparent from SEQ ID NOS: 9, 10, 11, 12, and 32, respectively, of the present application (which encodes the amino acid sequences shown in SEQ ID NOS: 1, 2, 3, 4, and 5 herein, respectively), from SEQ ID NO: 4 of WO 95/26397 (which DNA sequence, together with the stop codon TAA, is shown in SEQ ID NO: 13 herein and encodes the amino acid sequence shown in SEQ ID NO: 8 herein) and from SEQ ID NO: 5 of WO 95/26397 (shown in SEQ ID NO: 14 herein), respectively.

[0031] In connection with property i), the "homology" (identity) may be determined by use of any conventional algorithm, preferably by use of the gap progamme from the GCG package version 8 (August 1994) using default values for gap penalties, i.e., a gap creation penalty of 3.0 and gap extension penalty of 0.1 (Genetic Computer Group (1991) Programme Manual for the GCG Package, version 8, 575 Science Drive, Madison, Wisconsin, USA 53711).

[0032] The parent Termamyl-like a-amylase backbone may in an embodiment have an amino acid sequence which has a degree of identity to SEQ ID NO: 4 of at least 65%, preferably at least 70%, preferably at least 75%, more preferably at least 80%, more preferably at least 85%, even more preferably at least about 90%, even more preferably at least 95%, even more preferably at least 97%, and even more preferably at least 99% identity determined as described above [0033] A structural alignment between Termamyl® (SEQ ID NO: 4) and a Termamyl-like a-amylase may be used to identify equivalent/corresponding positions in other Termamyl-like α-amylases. One method of obtaining said structural alignment is to use the Pile Up programme from the GCG package using default values of gap penelties, i.e., a gap creation penalty of 3.0 and gap extension penalty of 0.1. Other structural alignment methods include the hydrophobic cluster analysis (Gaboriaud et al., (1987), FEBS LETTERS 224, pp. 149-155) and reverse threading (Huber, T ; Torda, AE, PROTEIN SCIENCE Vol. 7, No. 1 pp. 142-149 (1998).

[0034] For example, the corresponding positions, of target residues found in the C-domain of the B. licheniformis α-amylase, in the amino acid sequences of a number of Termamyl-like α-amylases which have already been mentioned are as follows:

[0035] As will be described further below mutations of these conserved amino acid residues are very important in relation to increasing the stability at acidic pH and/or at low calcium concentration at high temperatures.

[0036] Property ii) (see above) of the α-amylase, i.e., the immunological cross reactivity, may be assayed using an antibody raised against, or reactive with, at least one epitope of the relevant Termamyl-like α-amylase. The antibody, which may either be monoclonal or polyclonal, may be produced by methods known in the art, e.g., as described by Hudson et al., Practical Immunology, Third edition (1989), Blackwell Scientific Publications. The immunological cross-reactivity may be determined using assays known in the art, examples of which are Western Blotting or radial immunodiffusion assay, e.g., as described by Hudson et al., 1989. In this respect, immunological cross-reactivity between the α-amylases having the amino acid sequences SEQ ID NOS: 1, 2, 3, 4, 5, 6, 7, or 8 respectively, have been found.

[0037] The oligonucleotide probe used in the characterization of the Termamyl-like α-amylase in accordance with property iii) above may suitably be prepared on the basis of the full or partial nucleotide or amino acid sequence of the α-amylase in question.

[0038] Suitable conditions for testing hybridization involve presoaking in 5xSSC and prehybridizing for 1 hour at ~40°C in a solution of 20% formamide, 5xDenhardt's solution, 50mM sodium phosphate, pH 6.8, and 50mg of denatured sonicated calf thymus DNA, followed by hybridization in the same solution supplemented with 100mM ATP for 18 hours at ~40°C, followed by three times washing of the filter in 2xSSC, 0.2% SDS at 40°C for 30 minutes (low stringency), preferred at 50°C (medium stringency), more preferably at 65°C (high stringency), even more preferably at ~75°C (very high stringency). More details about the hybridization method can be found in Sambrook et al., Molecular Cloning: A Laboratory Manual, 2nd Ed., Cold Spring Harbor, 1989.

[0039] In the present context, "derived from" is intended not only to indicate an α-amylase produced or producible by a strain of the organism in question, but also an α-amylase encoded by a DNA sequence isolated from such strain and produced in a host organism transformed with said DNA sequence. Finally, the term is intended to indicate an α-amylase which is encoded by a DNA sequence of synthetic and/or cDNAorigin and which has the identifying characteristics of the α-amylase in question. The term is also intended to indicate that the parent α-amylase may be a variant of a naturally occurring α-amylase, i.e., a variant which is the result of a modification (insertion, substitution, deletion) of one or more amino acid residues of the naturally occurring a-amylase.

Parent hybrid a-amvlases [0040] The parent α-amylase (backbone) may be a hybrid α-amylase, i.e., an α-amylase which comprises a combination of partial amino acid sequences derived from at least two a-amylases.

[0041] The parent hybrid α-amylase may be one which on the basis of amino acid homology and/or immunological crossreactivity and/or DNA hybridization (as defined above) can be determined to belong to the Termamyl-like α-amylase family. In this case, the hybrid α-amylase is typically composed of at least one part of a Termamyl-like α-amylase and part(s) of one or more other a-amylases selected from Termamyl-like a-amylases or non-Termamyl-like a-amylases of microbial (bacterial or fungal) and/or mammalian origin.

[0042] Thus, the parent hybrid α-amylase may comprise a combination of partial amino acid sequences deriving from at least two Termamyl-like α-amylases, or from at least one Termamyl-like and at least one non-Termamyl-like bacterial α-amylase, or from at least one Termamyl-like and at least one fungal α-amylase. The Termamyl-like α-amylase from which a partial amino acid sequence derives may, e.g., be any of those specific Termamyl-like aa-mylase referred to herein.

[0043] For instance, the parent α-amylase may comprise a C-terminal part of an α-amylase derived from a strain of B. licheniformis, and a N-terminal part of an α-amylase derived from a strain ofS. amyloliquefaciens or from a strain ofS. stearothermophilus. For instance, the parent α-amylase may comprise at least 430 amino acid residues of the C-terminal part of the B. licheniformis α-amylase. A such hybrid Termamyl-like α-amylase may be identical to the Bacillus licheniformis a-amylase shown in SEQ ID NO: 4, except that the N-terminal 35 amino acid residues (of the mature protein) is replaced with the N-terminal 33 amino acid residues of the mature protein of the Bacillus amyloliquefaciens α-amylase (BAN) shown in SEQ ID NO: 5. A such hybrid may also consist of an amino acid segment corresponding to the 68 N-terminal amino acid residues of the B. stearothermophilus α-amylase having the amino acid sequence shown in SEQ ID NO: 3 and an amino acid segment corresponding to the 415 C-terminal amino acid residues of the B. licheniformis α-amylase having the amino acid sequence shown in SEQ ID NO: 4.

[0044] The non-Termamyl-like α-amylase may, e.g., be a fungal α-amylase, a mammalian or a plant α-amylase or a bacterial a-amylase (different from a Termamyl-like α-amylase). Specific examples of such α-amylases include the Aspergillus oryzae TAKA α-amylase, the A. niger acid α-amylase, the Bacillus subtilis α-amylase, the porcine pancreatic α-amylase and a barley a-amylase. All of these α-amylases have elucidated structures which are markedly different from the structure of a typical Termamyl-like a-amylase as referred to herein.

[0045] The fungal α-amylases mentioned above, i.e. derived from A. niger and A. oryzae, are highly homologous on the amino acid level and generally considered to belong to the same family of α-amylases. The fungal α-amylase derived from Aspergillus oryzae is commercially available under the tradename Fungamyl™.

[0046] Furthermore, when a particular variant of a Termamyl-like α-amylase (variant of the invention) is referred to - in a conventional manner - by reference to modification (e.g., deletion or substitution) of specific amino acid residues in the amino acid sequence of a specific Termamyl-like α-amylase, it is to be understood that variants of another Termamyl-like a-amylase modified in the equivalent position(s) (as determined from the best possible amino acid sequence alignment between the respective amino acid sequences) are encompassed thereby.

[0047] A preferred embodiment of a variant of the invention is one derived from a B. licheniformis α-amylase (as parent Termamyl-like α-amylase), e.g., one of those referred to above, such as the B. licheniformis α-amylase having the amino acid sequence shown in SEQ ID NO: 4.

Altered properties of variants of the invention [0048] The following discusses the relationship between alterations/mutations which may be present in variants of the invention, and desirable alterations in properties (relative to those a parent, Termamyl-like α-amylase) which may result therefrom. Increased stability at acidic pH and/or low calcium concentration at high temperatures [0049] The present disclosure relates to a variant of a parent Termamyl-like α-amylase, which variant α-amylase has been altered in comparison to the parent α-amylase in one or more solvent exposed amino acid residues on the surface of the a-amylase to increase the overall hydrophibicity of the α-amylase and/or to increase the overall numbers of methyl groups in the sidechains of said solvent exposed amino acid residues on the surface.

[0050] In a preferred embodiment one or more solvent exposed amino acid residues on a concav surface with inwards bend are altered to more hydrophobic amino acid residues.

[0051] In another preferred embodiment one or more solvent exposed amino acid residues on a convex surface are altered to increase the number of methyl groups in the sidechain.

[0052] The present disclosure relates to an α-amylase variant of a parent Termamyl-like α-amylase, comprising an alteration at one or more positions selected from the group of: E376, S417, A420, S356, Y358; wherein (a) the alteration(s) are independently 1. (i) an insertion of an amino acid downstream of the amino acid which occupies the position, 2. (ii) a deletion of the amino acid which occupies the position, or 3. (iii) a substitution of the amino acid which occupies the position with a different amino acid, (b) the variant has α-amylase activity and (c) each position corresponds to a position of the amino acid sequence of the parent Termamyl-like α-amylase having the amino acid sequence of SEQ ID NO: 4.

[0053] In an embodiment the alteration is one of the following substitutions: E376A,R,D,C,Q,G,H,I,K,L,M,N,F,P,S,T,W,Y,V.

In a preferred embodiment the substitution is: E376K.

[0054] In an embodiment the alteration is one of the following substitutions: S417A,R,D,C,E,Q,G,H,I,K,L,M,N,F,P,T,W,Y,V;

In a preferred embodiment the substitution is S417T.

[0055] In an embodiment the alteration is one of the following substitutions A420R,D,C,E,Q,G,H,I,K,L,M,N,F,P,S,T,W,Y,V;

In a preferred embodiment the substitution is: A420Q.R.

[0056] In an embodiment the alteration is one of the following substitutions: S356A, R,D,C,E,Q,G,PI,I,K,L,M,N,F,P,T,W,Y,V.

[0057] In an embodiment the alteration is one of the following substitutions Y358A,R,D,C,E,Q,G,H,I,K,L,M,N,F,P,S,T,W,V.

In a preferred embodiment the substitution is Y358F.

[0058] In an embodiment of the disclosure a variant comprises one or more of the following substitutions: E376K, S417T, A420Q.R, S356A, Y358F.

[0059] The increase in stability at acidic pH and/or low calcium concentration at high temperatures may be determined using the method described below in Example 2 illustrating the invention. The parent Termamyl-like α-amylase used as the backbone for preparing variants of the invention may be any Termamyl-like α-amylases as defined above.

[0060] Specifically contemplated are parent Termamyl-like α-amylases selected from the group derived from B. licheniformis, such as B. licheniformis strain ATCC 27811, B. amyloliquefaciens, B. stearothermophilus, Bacillus sp. NCIB 12289, NCIB 12512, NCIB 12513 or DSM 9375, and the parent Termamyl-like α-amylases depicted in SEQ ID NOS: 1,2, 3, 4, 5, 6, 7 and 8.

[0061] In an embodiment of the disclosure the parent Termamyl-like α-amylase is a hybrid α-amylase being identical to the

Bacillus licheniformis α-amylase shown in SEQ ID NO: 4 (Termamyl), except that the N-terminal 35 amino acid residues (of the mature protein) is replaced with the N-terminal 33 amino acid residues of the mature protein of the Bacillus amyloliquefaciens a-amylase (BAN) shown in SEQ ID NO: 5. The parent Termamyl-like hybrid α-amylase may be the above mentioned hybrid Termamyl-like α-amylase which further has the following mutations: H156Y+181T+190F+209V+264S (using the numbering in SEQ ID NO: 4). Said backbone is referred to below as "LE174".

[0062] The parent α-amylase may advantageously further have a mutation in one or more of the following positions: K176, 1201 and H205 (using the numbering in SEQ ID NO: 4), especially one or more the following substitutions: K176R, 1201F, and H205N (using the numbering in SEQ ID NO: 4), such as specifically the following substitutions: K176R+I201F+FI205N (using the numbering in SEQ ID NO: 4).

[0063] The inventors have found that the above mentioned variants have increased stability at phis below 7.0 (i.e., acidic pH) and/or at calcium concentration below 1mM (40ppm) (i.e, low calcium concentrations) at temperatures in the range from 95 to 160°C (i.e., high temperatures) relative to the parent Termamyl-like a-amylase.

[0064] Alterations (e.g., by substitution) of one or more solvent exposed amino acid residues which 1) increase the overall hydrophobicity of the enzyme, or 2) increase the number of methyl groups in the sidechains of the solvent exposed amino acid residues improve the temperature stability. It is preferred to alter (e.g., by substitution) to more hydrophobic residues on a concav surface with inwards bend. On a convex surface alterations (e.g., by substitution) to amino acid residues with an increased number of methyl groups in the sidechain are preferred.

[0065] Using the program CAST found on the internet at http://sunrise.cbs.umn.edu/cast/ version 1.0 (release Feb. 1998), (reference: Jie Liang, Flerbert Edelsbrunner, and Clare Woodward. 1998. Anatomy of protein Pockets and Cavities: Measurements of binding site geometry and implications for ligand design. Protein Science, 7, pp. 1884-1897), a concave area which access to the surface can be identified. Access to the surface is in the program defined as a probe with a diameter of 1.4Å can pass in and out. Using default parameters in the CAST program cancave cavities can be found using the Calcium depleted alpha-amylase structure from B. licheniformis as found in the Brookhaven database (1BPL):

Three types of interaction can be rationalised: 1. A. Interaction between the sidechain of the residue and the protein, 2. B. Interaction between the sidechain of the residue and the surrounding water, 3. C. Interaction between the water and the protein.

[0066] Using the parent Termamyl-like α-amylase shown in SEQ ID NO: 4 as the backbone the following positions are considered to be solvent exposed and may suitably be altered: E376, S417, A420, S356, Y358.

[0067] Corresponding and other solvent exposed positions on the surface of other Termamyl-like α-amylase may be identified using the dssp program byW. Kabsch and C. Sander, Biopolymers 22 (1983) pp. 2577-2637. The convex surfaces can be identified using the the AACAVI program part from the WPIATIF package ( G. Vriend, Whatif and drug design program. J. Mol. Graph. 8, pp. 52-56. (1990) version 19980317).

[0068] In an embodiment of the disclosure a variant comprises one or more of the following substitutions: E376K, S417T, A420Q.R, S356A, Y358F.

[0069] The inventors have found that the stability at acidic pH and/or low calcium concentration at high temperatures may be increased even more by combining mutations in the above mentioned positions, i.e., E376, S417, A420, S356, Y358, (using the SEQ ID NO: 4 numbering) with mutations in one or more of positions K176, 1201, and H205.

[0070] The following additional substitutions are preferred: K176A,R,D,C,E,Q,G,H,I,L,M,N,F,P,S,T,W,Y,V; I201A,R,D,C,E,Q,G,H,L,K,M,N,F,P,S,T,W,Y,V; H205A,R,D,C,E,Q,G,I,L,K,M,N,F,P,S,T,W,Y,V; [0071] As also shown in Example 2 illustrating the invention combining the following mutations give increased stability: K176+1201F+H205N+E376K+A420R or K176+1201F+H205N+S417T+A420Q or K176+1201F+H205N+S356A+Y358F using the hybrid a-amylase referred to as LE174 as the parent Termamyl-like a-amylase. General mutations in variants of the invention [0072] It may be preferred that a variant of the invention comprises one or more modifications in addition to those outlined above. Thus, it may be advantageous that one or more proline residues present in the part of the α-amylase variant which is modified is/are replaced with a non-proline residue which may be any of the possible, naturally occurring non-proline residues, and which preferably is an alanine, glycine, serine, threonine, valine or leucine.

[0073] Analogously, it may be preferred that one or more cysteine residues present among the amino acid residues with which the parent α-amylase is modified is/are replaced with a non-cysteine residue such as serine, alanine, threonine, glycine, valine or leucine.

[0074] Furthermore, a variant of the invention may - either as the only modification or in combination with any of the above outlined modifications - be modified so that one or more Asp and/or Glu present in an amino acid fragment corresponding to the amino acid fragment 185-209 of SEQ ID NO: 4 is replaced by an Asn and/or Gin, respectively. Also of interest is the replacement, in the Termamyl-like α-amylase, of one or more of the Lys residues present in an amino acid fragment corresponding to the amino acid fragment 185-209 of SEQ ID NO: 4 by an Arg.

[0075] It will be understood that the present invention encompasses variants incorporating two or more of the above outlined modifications.

[0076] Furthermore, it may be advantageous to introduce point-mutations in any of the variants described herein.

Cloning a DNAsequence encoding an a-amvlase of the invention [0077] The DNA sequence encoding a parent α-amylase may be isolated from any cell or microorganism producing the a-amylase in question, using various methods well known in the art. First, a genomic DNA and/or cDNA library should be constructed using chromosomal DNA or messenger RNAfrom the organism that produces the α-amylase to be studied. Then, if the amino acid sequence of the α-amylase is known, homologous, labelled oligonucleotide probes may be synthesized and used to identify α-amylase-encoding clones from a genomic library prepared from the organism in question. Alternatively, a labelled oligonucleotide probe containing sequences homologous to a known α-amylase gene could be used as a probe to identify a-amylase-encoding clones, using hybridization and washing conditions of lower stringency.

[0078] Yet another method for identifying α-amylase-encoding clones would involve inserting fragments of genomic DNA into an expression vector, such as a plasmid, transforming α-amylase-negative bacteria with the resulting genomic DNA library, and then plating the transformed bacteria onto agar containing a substrate for α-amylase, thereby allowing clones expressing the a-amylase to be identified.

[0079] Alternatively, the DNA sequence encoding the enzyme may be prepared synthetically by established standard methods, e.g. the phosphoroamidite method described by S.L. Beaucage and M.FI. Caruthers (1981) or the method described by Matthes et al. (1984). In the phosphoroamidite method, oligonucleotides are synthesized, e.g., in an automatic DNA synthesizer, purified, annealed, ligated and cloned in appropriate vectors.

[0080] Finally, the DNA sequence may be of mixed genomic and synthetic origin, mixed synthetic and cDNA origin or mixed genomic and cDNA origin, prepared by ligating fragments of synthetic, genomic or cDNA origin (as appropriate, the fragments corresponding to various parts of the entire DNA sequence), in accordance with standard techniques. The DNA sequence may also be prepared by polymerase chain reaction (PCR) using specific primers, for instance as described in US 4,683,202 or R.K. Saiki et al. (1988).

Site-directed mutagenesis [0081] Once an a-amylase-encoding DNA sequence has been isolated, and desirable sites for mutation identified, mutations may be introduced using synthetic oligonucleotides. These oligonucleotides contain nucleotide sequences flanking the desired mutation sites; mutant nucleotides are inserted during oligonucleotide synthesis. In a specific method, a single-stranded gap of DNA, bridging the a-amylase-encoding sequence, is created in a vector carrying the a-amylase gene. Then the synthetic nucleotide, bearing the desired mutation, is annealed to a homologous portion of the single-stranded DNA. The remaining gap is then filled in with DNA polymerase I (Klenow fragment) and the construct is ligated using T4 ligase. A specific example of this method is described in Morinaga et al. (1984). US 4,760,025 discloses the introduction of oligonucleotides encoding multiple mutations by performing minor alterations of the cassette. However, an even greater variety of mutations can be introduced at any one time by the Morinaga method, because a multitude of oligonucleotides, of various lengths, can be introduced.

[0082] Another method for introducing mutations into α-amylase-encoding DNA sequences is described in Nelson and Long (1989). It involves the 3-step generation of a PCR fragment containing the desired mutation introduced by using a chemically synthesized DNA strand as one of the primers in the PCR reactions. From the PCR-generated fragment, a DNA fragment carrying the mutation may be isolated by cleavage with restriction endonucleases and reinserted into an expression plasmid.

Random Mutagenesis [0083] Random mutagenesis is suitably performed either as localised or region-specific random mutagenesis in at least three parts of the gene translating to the amino acid sequence shown in question, or within the whole gene.

[0084] The random mutagenesis of a DNA sequence encoding a parent a-amylase may be conveniently performed by use of any method known in the art.

[0085] In relation to the above, a further aspect of the present invention relates to a method for generating a variant of a parent α-amylase, e.g., wherein the variant exhibits altered or increased thermal stability relative to the parent, the method comprising: 1. (a) subjecting a DNA sequence encoding the parent α-amylase to random mutagenesis, 2. (b) expressing the mutated DNA sequence obtained in step (a) in a host cell, and 3. (c) screening for host cells expressing an α-amylase variant which has an altered property (i.e. thermal stability) relative to the parent a-amylase.

[0086] Step (a) of the above method of the invention is preferably performed using doped primers.

[0087] For instance, the random mutagenesis may be performed by use of a suitable physical or chemical mutagenizing agent, by use of a suitable oligonucleotide, or by subjecting the DNA sequence to PCR generated mutagenesis. Furthermore, the random mutagenesis may be performed by use of any combination of these mutagenizing agents. The mutagenizing agent may, e.g., be one which induces transitions, transversions, inversions, scrambling, deletions, and/or insertions.

[0088] Examples of a physical or chemical mutagenizing agent suitable for the present purpose include ultraviolet (UV) irradiation, hydroxylamine, N-methyl-N'-nitro-N-nitrosoguanidine (MNNG), 0-methyl hydroxylamine, nitrous acid, ethyl methane sulphonate (EMS), sodium bisulphite, formic acid, and nucleotide analogues. When such agents are used, the mutagenesis is typically performed by incubating the DNA sequence encoding the parent enzyme to be mutagenized in the presence of the mutagenizing agent of choice under suitable conditions for the mutagenesis to take place, and selecting for mutated DNA having the desired properties.

[0089] When the mutagenesis is performed by the use of an oligonucleotide, the oligonucleotide may be doped or spiked with the three non-parent nucleotides during the synthesis of the oligonucleotide at the positions which are to be changed. The doping or spiking may be done so that codons for unwanted amino acids are avoided. The doped or spiked oligonucleotide can be incorporated into the DNA encoding the alpha-amylase enzyme by any published technique, using e.g. PCR, LCR or any DNA polymerase and ligase as deemed appropriate.

[0090] Preferably, the doping is carried out using "constant random doping", in which the percentage of wild-type and mutation in each position is predefined. Furthermore, the doping may be directed toward a preference for the introduction of certain nucleotides, and thereby a preference for the introduction of one or more specific amino acid residues. The doping may be made, e.g., so as to allow for the introduction of 90% wild type and 10% mutations in each position. An additional consideration in the choice of a doping scheme is based on genetic as well as protein-structural constraints. The doping scheme may be made by using the DOPE program which, inter alia, ensures that introduction of stop codons is avoided.

[0091] When PCR-generated mutagenesis is used, either a chemically treated or non-treated gene encoding a parent a-amylase is subjected to PCR under conditions that increase the mis-incorporation of nucleotides (Deshler 1992; Leung et al., Technique, Vol.1, 1989, pp. 11-15).

[0092] A mutator strain of E. coli (Fowler et al., Molec. Gen. Genet., 133, 1974, pp. 179-191), S. cereviseae or any other microbial organism may be used for the random mutagenesis of the DNAencoding the a-amylase by, e.g., transforming a plasmid containing the parent glycosylase into the mutator strain, growing the mutator strain with the plasmid and isolating the mutated plasmid from the mutator strain. The mutated plasmid may be subsequently transformed into the expression organism.

[0093] The DNA sequence to be mutagenized may be conveniently present in a genomic or cDNA library prepared from an organism expressing the parent alpha-amylase. Alternatively, the DNA sequence may be present on a suitable vector such as a plasmid or a bacteriophage, which as such may be incubated with or otherwise exposed to the mutagenising agent. The DNA to be mutagenized may also be present in a host cell either by being integrated in the genome of said cell or by being present on a vector harboured in the cell. Finally, the DNA to be mutagenized may be in isolated form. It will be understood that the DNA sequence to be subjected to random mutagenesis is preferably a cDNA or a genomic DNA sequence.

[0094] In some cases it may be convenient to amplify the mutated DNA sequence prior to performing the expression step b) or the screening step c). Such amplification may be performed in accordance with methods known in the art, the presently preferred method being PCR-generated amplification using oligonucleotide primers prepared on the basis of the DNA or amino acid sequence of the parent enzyme.

[0095] Subsequent to the incubation with or exposure to the mutagenising agent, the mutated DNA is expressed by culturing a suitable host cell carrying the DNA sequence under conditions allowing expression to take place. The host cell used for this purpose may be one which has been transformed with the mutated DNA sequence, optionally present on a vector, or one which was carried the DNA sequence encoding the parent enzyme during the mutagenesis treatment. Examples of suitable host cells are the following: gram positive bacteria such as Bacillus subtilis, Bacillus licheniformis, Bacillus lentus, Bacillus brevis, Bacillus stearothermophilus, Bacillus alkalophilus, Bacillus amyloliquefaciens, Bacillus coagulans, Bacillus circulans, Bacillus lautus, Bacillus megaterium, Bacillus thuringiensis, Streptomyces lividans or Streptomyces murinus; and gram-negative bacteria such as E. coli.

[0096] The mutated DNA sequence may further comprise a DNA sequence encoding functions permitting expression of the mutated DNA sequence.

Localized random mutagenesis [0097] The random mutagenesis may be advantageously localized to a part of the parent α-amylase in question. This may, e.g., be advantageous when certain regions of the enzyme have been identified to be of particular importance for a given property of the enzyme, and when modified are expected to result in a variant having improved properties. Such regions may normally be identified when the tertiary structure of the parent enzyme has been elucidated and related to the function of the enzyme.

[0098] The localized, or region-specific, random mutagenesis is conveniently performed by use of PCR generated mutagenesis techniques as described above or any other suitable technique known in the art. Alternatively, the DNA sequence encoding the part of the DNA sequence to be modified may be isolated, e.g., by insertion into a suitable vector, and said part may be subsequently subjected to mutagenesis by use of any of the mutagenesis methods discussed above.

Alternative methods of providing a-amvlase variants [0099] Alternative methods for providing variants of the invention include gene shuffling method known in the art including the methods, e.g., described in WO 95/22625 (from Affymax Technologies N.V.) and WO 96/00343 (from Novo Nordisk A/S).

Expression of a-amvlase variants of the invention [0100] According to the invention, a DNA sequence encoding the variant produced by methods described above, or by any alternative methods known in the art, can be expressed, in enzyme form, using an expression vector which typically includes control sequences encoding a promoter, operator, ribosome binding site, translation initiation signal, and, optionally, a repressor gene or various activator genes.

[0101] The recombinant expression vector carrying the DNA sequence encoding an a-amylase variant of the invention may be any vector which may conveniently be subjected to recombinant DNA procedures, and the choice of vector will often depend on the host cell into which it is to be introduced. Thus, the vector may be an autonomously replicating vector, i.e., a vector which exists as an extrachromosomal entity, the replication of which is independent of chromosomal replication, e.g., a plasmid, a bacteriophage or an extrachromosomal element, minichromosome or an artificial chromosome. Alternatively, the vector may be one which, when introduced into a host cell, is integrated into the host cell genome and replicated together with the chromosome(s) into which it has been integrated.

[0102] In the vector, the DNA sequence should be operably connected to a suitable promoter sequence. The promoter may be any DNA sequence which shows transcriptional activity in the host cell of choice and may be derived from genes encoding proteins either homologous or heterologous to the host cell. Examples of suitable promoters for directing the transcription of the DNA sequence encoding an a-amylase variant of the invention, especially in a bacterial host, are the promoter of the lac operon of E.coll, the Streptomyces coellcolor agarase gene dag A promoters, the promoters of the Bacillus llchenlformls α-amylase gene (amyL), the promoters of the Bacillus stearothermophllus maltogenic amylase gene (amyM), the promoters of the Bacillus amylollquefaclens α-amylase (amyQ), the promoters of the Bacillus subtills xylAand xylB genes etc. For transcription in a fungal host, examples of useful promoters are those derived from the gene encoding A. oryzae TAKA amylase, Rhlzomucor mlehel aspartic proteinase, A. nlger neutral α-amylase, A. nlger acid stable α-amylase, A. nlger glucoamylase, Rhlzomucor mlehel lipase, A. oryzae alkaline protease, A. oryzae triose phosphate isomerase or A. nldulans acetamidase.

[0103] The expression vector of the invention may also comprise a suitable transcription terminator and, in eukaryotes, polyadenylation sequences operably connected to the DNA sequence encoding the α-amylase variant of the invention. Termination and polyadenylation sequences may suitably be derived from the same sources as the promoter.

[0104] The vector may further comprise a DNA sequence enabling the vector to replicate in the host cell in question. Examples of such sequences are the origins of replication of plasmids pUC19, pACYCI 77, pUB110, pE194, pAMB1 and plJ702.

[0105] The vector may also comprise a selectable marker, e.g. a gene the product of which complements a defect in the host cell, such as the dal genes from B. subtills or B. llchenlformls, or one which confers antibiotic resistance such as ampicillin, kanamycin, chloramphenicol or tetracyclin resistance. Furthermore, the vector may comprise Aspergillus selection markers such as amdS, argB, niaD and sC, a marker giving rise to hygromycin resistance, or the selection may be accomplished by cotransformation, e.g. as described in WO 91/17243.

[0106] While intracellular expression may be advantageous in some respects, e.g. when using certain bacteria as host cells, it is generally preferred that the expression is extracellular. In general, the Bacillus a-amylases mentioned herein comprise a preregion permitting secretion of the expressed protease into the culture medium. If desirable, this preregion may be replaced by a different preregion or signal sequence, conveniently accomplished by substitution of the DNA sequences encoding the respective preregions.

[0107] The procedures used to ligate the DNA construct of the invention encoding an α-amylase variant, the promoter, terminator and other elements, respectively, and to insert them into suitable vectors containing the information necessary for replication, are well known to persons skilled in the art (cf., for instance, Sambrook et al., Molecular Cloning: A Laboratory Manual, 2nd Ed., Cold Spring Flarbor, 1989).

[0108] The cell of the invention, either comprising a DNA construct or an expression vector of the invention as defined above, is advantageously used as a host cell in the recombinant production of an α-amylase variant of the invention. The cell may be transformed with the DNA construct of the invention encoding the variant, conveniently by integrating the DNA construct (in one or more copies) in the host chromosome. This integration is generally considered to be an advantage as the DNA sequence is more likely to be stably maintained in the cell. Integration of the DNA constructs into the host chromosome may be performed according to conventional methods, e.g. by homologous or heterologous recombination. Alternatively, the cell may be transformed with an expression vector as described above in connection with the different types of host cells.

[0109] The cell of the invention may be a cell of a higher organism such as a mammal or an insect, but is preferably a microbial cell, e.g., a bacterial or a fungal (including yeast) cell.

[0110] Examples of suitable bacteria are grampositive bacteria such as Bacillus subtilis, Bacillus licheniformis, Bacillus lentus, Bacillus brevis, Bacillus stearothermophilus, Bacillus alkalophilus, Bacillus amyloliquefaciens, Bacillus coagulans, Bacillus circulans, Bacillus lautus, Bacillus megaterium, Bacillus thuringiensis, or Streptomyces Hvidans or Streptomyces murinus, or gramnegative bacteria such as E. coli. The transformation of the bacteria may, for instance, be effected by protoplast transformation or by using competent cells in a manner known perse.

[0111] The yeast organism may favourably be selected from a species of Saccharomyces or Schizosaccharomyces, e.g. Saccharomyces cerevlsiae. The filamentous fungus may advantageously belong to a species of Aspergillus, e.g. Aspergillus oryzae or Aspergillus niger. Fungal cells may be transformed by a process involving protoplast formation and transformation of the protoplasts followed by regeneration of the cell wall in a manner known per se. A suitable procedure for transformation of Aspergillus host cells is described in EP 238 023.

[0112] In a yet further aspect, the present invention relates to a method of producing an α-amylase variant of the invention, which method comprises cultivating a host cell as described above under conditions conducive to the production of the variant and recovering the variant from the cells and/or culture medium.

[0113] The medium used to cultivate the cells may be any conventional medium suitable for growing the host cell in question and obtaining expression of the α-amylase variant of the invention. Suitable media are available from commercial suppliers or may be prepared according to published recipes (e.g., as described in catalogues of the American Type Culture Collection).

[0114] The α-amylase variant secreted from the host cells may conveniently be recovered from the culture medium by well-known procedures, including separating the cells from the medium by centrifugation or filtration, and precipitating proteinaceous components of the medium by means of a salt such as ammonium sulphate, followed by the use of chromatographic procedures such as ion exchange chromatography, affinity chromatography, or the like.

Industrial Applications [0115] The α-amylase variants of this invention possesses valuable properties allowing for a variety of industrial applications. An enzyme variant of the invention are applicable as a component in washing, dishwashing and hard-surface cleaning detergent compositions. Numerous variants are particularly useful in the production of sweeteners and ethanol from starch, and/or for textile desizing. Conditions for conventional starch- conversion processes, including starch liquefaction and/or saccharification processes, are described in, e.g., US 3,912,590 and in EP patent publications Nos. 252,730 and 63,909.

Production of sweeteners from starch: [0116] A "traditional" process for conversion of starch to fructose syrups normally consists of three consecutive enzymatic processes, viz. a liquefaction process followed by a saccharification process and an isomerization process. During the liquefaction process, starch is degraded to dextrins by an α-amylase (e.g. Termamyl™) at pH values between 5.5 and 6.2 and at temperatures of 95-160°C for a period of approx. 2 hours. In order to ensure an optimal enzyme stability under these conditions, 1 mM of calcium is added (40 ppm free calcium ions).

[0117] After the liquefaction process the dextrins are converted into dextrose by addition of a glucoamylase (e.g. AMG™) and a debranching enzyme, such as an isoamylase or a pullulanase (e.g. Promozyme™). Before this step the pH is reduced to a value below 4.5, maintaining the high temperature (above 95°C), and the liquefying α-amylase activity is denatured. The temperature is lowered to 60°C, and glucoamylase and debranching enzyme are added. The saccharification process proceeds for 24-72 hours.

[0118] After the saccharification process the pH is increased to a value in the range of 6-8, preferably pH 7.5, and the calcium is removed by ion exchange. The dextrose syrup is then converted into high fructose syrup using, e.g., an immmobilized glucoseisomerase (such as Sweetzyme™).

[0119] At least 1 enzymatic improvements of this process could be envisaged. Reduction of the calcium dependency of the liquefying α-amylase. Addition of free calcium is required to ensure adequately high stability of the α-amylase, but free calcium strongly inhibits the activity of the glucoseisomerase and needs to be removed, by means of an expensive unit operation, to an extent which reduces the level of free calcium to below 3-5 ppm. Cost savings could be obtained if such an operation could be avoided and the liquefaction process could be performed without addition of free calcium ions.

[0120] To achieve that, a less calcium-dependent Termamyl-like α-amylase which is stable and highly active at low concentrations of free calcium (< 40 ppm) is required. Such a Termamyl-like α-amylase should have a pH optimum at a pH in the range of 4.5-6.5, preferably in the range of 4.5-5.5.

Detergent compositions [0121] As mentioned above, variants of the invention may suitably be incorporated in detergent compositions. Reference is made, for example, to WO 96/23874 and WO 97/07202 for further details concerning relevant ingredients of detergent compositions (such as laundry or dishwashing detergents), appropriate methods of formulating the variants in such detergent compositions, and for examples of relevant types of detergent compositions.

[0122] Detergent compositions comprising a variant of the invention may additionally comprise one or more other enzymes, such as a lipase, cutinase, protease, cellulase, peroxidase or laccase, and/or another a-amylase.

[0123] α-amylase variants of the invention may be incorporated in detergents at conventionally employed concentrations. It is at present contemplated that a variant of the invention may be incorporated in an amount corresponding to 0.00001-1 mg (calculated as pure, active enzyme protein) of α-amylase per liter of wash/dishwash liquor using conventional dosing levels of detergent. MATERIALS AND METHODS Enzymes: [0124] LE174 hybrid alpha-amylase variant: LE174 is a hybrid Termamyl-like alpha-amylase being identical to the Termamyl sequence, i.e., the Bacillus licheniformis α-amylase shown in SEQ ID NO: 4, except that the N-terminal 35 amino acid residues (of the mature protein) has been replaced by the N-terminal 33 residues of BAN (mature protein), i.e., the Bacillus amyloliquefaciens alpha-amylase shown in SEQ ID NO: 5, which further have following mutations: H156Y+A181T+N190F+A209V+Q264S (using the numbering in SEQ ID NO: 4).

Construction of pSNK101 [0125] This E. colilBacillus shuttle vector can be used to introduce mutations without expression of α-amylase in E. coli and then be modified in such way that the α-amylase is active in Bacillus. The vector was constructed as follows: The α-amylase gene in the pX vector (pDN1528 with the following alterations within amyL: BAN(1-33), H156Y, A181T, N190F, A209V, Q264S, the plasmid pDN1528 is further described in Example 1) was inactivated by interruption in the Pstl site in the 5'coding region of the alpha-amylase gene by a 1.2 kb fragment containing an E. coli origin fragment. This fragment was amplified from the pUC19 (GenBank Accession #:X02514) using the forward primer 1: 5'-gacctgcagtcaggcaacta-3' (SEQ ID NO: 28) and the reverse primer 1: 5'-tagagtcgacctgcaggcat-3' (SEQ ID NO: 29). The PCR amplicon and the pX plasmid containing the α-amylase gene were digested with Pstl at 37°C for 2 hours. The pX vector fragment and the E. coli origin amplicon were ligated at room temperature, for 1 hour and transformed in E. coli by electrotransformation. The resulting vector is designated pSnK101.

[0126] This E. colilBacillus shuttle vector can be used to introduce mutations without expression of α-amylase in E. coli and then be modified in such way that the a-amylase is active in Bacillus. The vector was constructed as follows: The α-amylase gene in the pX vector (pDN1528 with the following alterations within amyL: BAN(1-33), H156Y+A181T+N190F+A209V+Q264S, the plasmid pDN1528 is further described in Example 1) was inactivated by interruption in the Pstl site in the 5'coding region of the alpha-amylase gene by a 1.2 kb fragment containing an E. coli origin fragment. This fragment was amplified from the pUC19 (GenBank Accession #:X02514) using the forward primer 2: 5'-gacctgcagtcaggcaacta-3' (SEQ ID NO: 30) and the reverse primer 2: 5'-tagagtcgacctgcaggcat-3' (SEQ ID NO: 31). The PCR amplicon and the pX plasmid containing the α-amylase gene were digested with Pstl at 37°C for 2 hours. The pX vector fragment and the E. coli origin amplicon were ligated at room temperature, for 1 hour and transformed in E. coli by electrotransformation. The resulting vector is designated pSnK101.

Low pH filter assay [0127] Bacillus libraries are plated on a sandwich of cellulose acetate (OE 67, Schleicher &amp; Schuell, Dassel, Germany) - and nitrocellulose filters (Protran-Ba 85, Schleicher &amp; Schuell, Dassel, Germany) on TY agar plates with 10 pg/ml chloramphenicol at 37°C for at least 21 hrs. The cellulose acetate layer is located on the TY agar plate.

[0128] Each filter sandwich is specifically marked with a needle after plating, but before incubation in order to be able to localize positive variants on the filter and the nitrocellulose filter with bound variants is transferred to a container with citrate buffer, pH 4.5 and incubated at 90°C for 15 min. The cellulose acetate filters with colonies are stored on the TY-plates at room temperature until use. After incubation, residual activity is detected on assay plates containing 1% agarose, 0.2% starch in citrate buffer, pH 6.0. The assay plates with nitrocellulose filters are marked the same way as the filter sandwich and incubated for 2 hours, at 50°C. After removal of the filters the assay plates are stained with 10% Lugol solution. Starch degrading variants are detected as white spots on dark blue background and then identified on the storage plates. Positive variants are rescreened twice under the same conditions as the first screen.

Secondary screening [0129] Positive transformants after rescreening are picked from the storage plate and tested in a secondary plate assay. Positive transformants are grown for 22 hours at 37°C in 5 ml LB + chloramphenicol. The Bacillus culture of each positive transformant and a control LE174 variant were incubated in citrate buffer, pH 4.5 at 90°C and samples were taken at 0,10,20,30,40,60 and 80 minutes. A3 microliter sample was spotted on a assay plate. The assay plate was stained with 10% Lugol solution. Improved variants were seen as variants with higher residual activity detected as halos on the assay plate than the backbone. The improved variants are determined by nucleotide sequencing.

Fermentation and purification of α-amylase variants [0130] A B. subtilis strain harbouring the relevant expression plasmid is streaked on a LB-agar plate with 15 ug/ml chloramphenicol from -80°C stock, and grown overnight at 37°C. The colonies are transferred to 100 ml BPX media supplemented with 15 pg/ml chloramphenicol in a 500 ml shaking flask. Composition of BPX medium:

[0131] The culture is shaken at 37°C at 270 rpm for 5 days.

[0132] Cells and cell debris are removed from the fermentation broth by centrifugation at 4500 rpm in 20-25 minutes. Afterwards the supernatant is filtered to obtain a completely clear solution. The filtrate is concentrated and washed on a UF-filter (10000 cut off membrane) and the buffer is changed to 20mM Acetate pH 5.5. The UF-filtrate is applied on a S-sepharose F.F. and elution is carried out by step elution with 0.2M NaCI in the same buffer. The eluate is dialysed against 10mM Tris, pH 9.0 and applied on a Q-sepharose F.F. and eluted with a linear gradient from 0-0.3M NaCI over 6 column volumes. The fractions which contain the activity (measured by the Phadebas assay) are pooled, pH was adjusted to pH 7.5 and remaining color was removed by a treatment with 0.5%W/vol. active coal in 5 minutes.

Stability determination [0133] All the stability trials are made using the same set up. The method is: [0134] The enzyme is incubated under the relevant conditions (1-4). Samples are taken at 0, 5, 10, 15 and 30 minutes and diluted 25 times (same dilution for all taken samples) in assay buffer (0.1M 50mM Britton buffer pH 7.3) and the activity is measured using the Phadebas assay (Pharmacia) under standard conditions pH 7.3, 37°C.

[0135] The activity measured before incubation (0 minutes) is used as reference (100%). The decline in percent is calculated as a function of the incubation time. The table shows the residual activity after 30 minutes of incubation.

Activity determination - (KNU) [0136] One Kilo alpah-amylase Unit (1 KNU) is the amount of enzyme which breaks down 5.26 g starch (Merck, Amylum Solubile, Erg. B 6, Batch 9947275) per hour in Novo Nordisk's standard method for determination of alpha-amylase based upon the following condition:

[0137] Detailed description of Novo Nordisk's analytical method (AF 9) is available on request.

Specific activity determination

Assay for a-Amvlase Activity [0138] a-amylase activity is determined by a method employing Phadebas® tablets as substrate. Phadebas tablets (Phadebas® Amylase Test, supplied by Pharmacia Diagnostic) contain a crosslinked insoluble blue-coloured starch polymer which has been mixed with bovine serum albumin and a buffer substance and tabletted.

[0139] For every single measurement one tablet is suspended in a tube containing 5 ml 50 mM Britton-Robinson buffer (50 mM acetic acid, 50 mM phosphoric acid, 50 mM boric acid, 0.1 mM CaCl2, pH adjusted to the value of interest with NaOH). The test is performed in a water bath at the temperature of interest. The a-amylase to be tested is diluted in x ml of 50 mM Britton-Robinson buffer. 1 ml of this α-amylase solution is added to the 5 ml 50 mM Britton-Robinson buffer. The starch is hydrolysed by the a-amylase giving soluble blue fragments. The absorbance of the resulting blue solution, measured spectrophotometrically at 620 nm, is a function of the α-amylase activity.

[0140] It is important that the measured 620 nm absorbance after 10 or 15 minutes of incubation (testing time) is in the range of 0.2 to 2.0 absorbance units at 620 nm. In this absorbance range there is linearity between activity and absorbance (Lambert-Beer law). The dilution of the enzyme must therefore be adjusted to fit this criterion. Under a specified set of conditions (temp., pH, reaction time, buffer conditions) 1 mg of a given α-amylase will hydrolyse a certain amount of substrate and a blue colour will be produced. The colour intensity is measured at 620 nm. The measured absorbance is directly proportional to the specific activity (activity/mg of pure α-amylase protein) of the a-amylase in question under the given set of conditions.

EXAMPLES

Example 1.

[0141] Construction, bv random mutagenesis, of Termamvl-like LE174 a-amvlase variants having an improved stability at low pH and a reduced dependency on calcium ions for stability compared to the parent enzyme.

Random mutagenesis [0142] To improve the stability at low pH and low calcium concentration of the parent LE174 α-amylase variant random mutagenesis in preselected regions was performed.

[0143] The regions were:

[0144] For each six region, random oligonucleotides are synthesized using the same mutation rate (97 % backbone and 1% of each of the three remaining nucleotides giving 3% mutations) in each nucleotide position in the above regions, e.g., 1. position in condon for A425: 97%C, 1%A, 1%T, 1%G. The six random oligonucleotides and if used complementary SOE helping primers are shown in tables1-6: with the four distribution of nucleotides below.

Table 1.

[0145] RSERI: 5'-GC GTT TTG CCG GCC GAC ATA312 234 322 243 333 133 444 233 423 242 212 211 243 343 CAAACC TGAATT-3' (SEQ ID NO: 15)

Table 2.

[0146] RSERII: 5'-GC GTT TTG CCG GCC GACATACAT TCG CTT TGC CCCACC GGG TCC GTC TGT TAT TAATGC CGC 311 133 241 122 243 113 341 432 423 433 223 332 242 331 GCC GAC AAT GTC ATG GTG-3' (SEQ ID NO: 16)

Table 3.

[0147] RSERIII: 5'-GTC GCC TTC CCT TGT CCA433 413 112 423 124 424 423 411 121 123 124 324 243 233 GTACGC ATA CTG TTT TCT-3' (SEQ ID NO: 17)

Helping primer FSERIII: 5'-TGG ACA AGG GAA GGC GAC AG-3' (SEQ ID NO: 18)

Table 4.

[0148] RSERV: 5-TAA GAT CGG TTC AAT TTT 424 222 311 443 144 112 223 434 324 441 423 233 222 342 CCC GTACAT AT C CCC GTA GAA-3 (SEQ ID NO: 19)

Helping primer FSERV: 5-AAA ATT G AA CCG AT C TTA-3 (SEQ ID NO: 20)

Table 5.

[0149] FSERVII: 5'-TT CCATGC TGC ATC GACACAGGG AGG CGG CTATGATAT GAG G AA ATT GCT GAA344 213 442 342 223 311 431 233 422 411 123 442 213 122 TGT CGA TAA CCA-3' (SEQ ID NO: 21) [0150] Helping primer RSERVII: 5'- TGT CGA TGC AG C AT G G AA - 3' (SEQ ID NO: 22)

Table 6.

[0151] FSERIX 5'-GT CCAAAC ATG G TT TAAGCC432 243 221 343 222 212 232 313 114 441 123 244 121 333 TCAGGT TTT CTA CGG GGA-3' (SEQ ID NO: 23)

Helping primer RSERIX: 5'-GGC TTAAAC CAT GTT TGG AC-3' (SEQ ID NO: 24)

[0152] Distribution of nucleotides in each mutated nucleotide position 1:97%A, 1%T, 1%C, 1%G

2:97%T, 1 %A, 1%C, 1%G 3:97%C, 1%A, 1%T, 1%G 4:97%G, 1 %A, 1%T, 1%C

Construction of plasmid libraries [0153] Two approximately 1.4 kb fragments were PCR amplified using the primer 1B: 5'-CGATTG CTG ACG CTG TTA TTT GCG-3' and the random oligonucleotide apparent from table 1, respectively the random oligonucleotide apparent from table 2. The vector pSnK101 and the PCR fragments were digested with EcoRV and Eagl for 2 hours. The approximately 3.6 kb vector fragment and the approximately 1.3 kb PCR fragments was purified and ligated overnight and transformed in to E.coli and then further transformed into a Bacillus host starin as described below. The random oligonucleotides apparent from Tables 3-6 (which by a common term is designated aSER and bSER in Fig. 2) for each region and specific B. licheniformis primers 1B (SEQ ID NO: 26) and #63: 5'-CTATCT TTG AAC ATAAAT TGAAAC C-3' (SEQ ID NO: 27) covering the EcoRV and the Eagl sites in the LE174 sequence are used to generate PCR-library-fragments by the overlap extension method (Horton et al., Gene, 77 (1989), pp. 61-68) Figure 2 shows the PCR strategy. The PCR fragments are cloned in the E. colilBacillus shuttle vector pSNK101 (see Materials and Methods) enabling mutagenesis in E. coli and immediate expression in Bacillus subtilis preventing lethal accumulation of amylases in E. coli. After establishing the cloned PCR fragments in E. coli, a modified pUC19 fragment is digested out of the plasmid and the promoter and the mutated Termamyl gene is physically connected and expression can take place in the Bacillus host.

Screening [0154] The six libraries were screened in the low pH filter assays described in the "Material and Methods" section above.

[0155] All variants listed in the table in Example 2 below was prepared as described in Example 1. EXAMPLE 2

Measurement of stability [0156] Normally, industrial liquefaction processes is run at pH 6.0-6.2 with addition of about 40 ppm free calcium in order to improve the stability at 95°C-105°C. Variants of the invention have been made in order to improve the stability at 1. 1. lower pH than pH 6.2 and/or 2. 2. at free calcium levels lower than 40ppm free calcium.

[0157] An assay which measures the stability at acidic pH, pH 5.0, in the presence of 5ppm free calcium was used to measure the increase in stability.

[0158] 10 pg of the variant was incubated under the following conditions: A 0.1 M acetate solution, pH adjusted to pH 5.0, containing 5ppm calcium and 5% w/w common corn starch (free of calcium). Incubation was made in a water bath at 95°C for 30 minutes.

Results:

[0159] Increased stability at pH 5.0, 5 ppm calcium incubated at 95°C

Specific activity determination.

[0160] The specific activity was determined using the Phadebas assay (Pharmacia) (described above) as activity/mg enzyme. The activity was determined using the α-amylase assay described in the Materials and Methods section herein. LE174 with the following substitutions:

K176R+I201F+H205N

Specific activity determined: 13400NU/mg LE174 with the following substitutions: K176R+I201F+H205N+E376K+A420R:

Specific activity determined: 14770NU/mg LE174 with the following substitutions: K176R+I201F+H205N+S417T+A420Q:

Specific activity determined: 16670NU/mg LE174 with the following substitutions: K176R+I201F+H205N+S356A+Y358F:

Specific activity determined: 15300NU/mg REFERENCES CITED

[0161]

Klein, C., etal., Biochemistry 1992, 31, 8740-8746,

Mizuno, H„ et al., J. Mol. Biol. (1993) 234, 1282-1283,

Chang, C., et al, J. Mol. Biol. (1993) 229, 235-238,

Larson, S.B., J. Mol. Biol. (1994) 235, 1560-1584,

Lawson, C.L., J. Mol. Biol. (1994) 236, 590-600,

Qian, M., etal., J. Mol. Biol. (1993) 231,785-799,

Brady, R.L., et al., Acta Crystallogr. sect. B, 47, 527-535,

Swift, H.J., et al., Acta Crystallogr. sect. B, 47, 535-544 A. Kadziola, Ph.D. Thesis: "An alpha-amylase from Barley and its Complex with a Substrate Analogue Inhibitor Studied by X-ray Crystallography", Department of Chemistry University of Copenhagen 1993

MacGregor, E.A, Food Hydrocolloids, 1987, Vol.1, No. 5-6, p. B. Diderichsen and L. Christiansen, Cloning of a maltogenic a-amylasefrom Bacillus stearothermophilus, FEMS Microbiol, letters: 56: pp. 53-60 (1988)

Hudson et al., Practical Immunology, Third edition (1989), Blackwell Scientific Publications,

Sambrook et al., Molecular Cloning: A Laboratory Manual, 2nd Ed., Cold Spring Harbor, 1989 S.L. Beaucage and M.H. Caruthers, Tetrahedron Letters 22, 1981, pp. 1859-1869

Matthes et al., The EMBO J. 3, 1984, pp. 801-805. R.K. Saiki et al., Science 239, 1988, pp. 487-491.

Morinaga etal., (1984, Biotechnology 2:646-639)

Nelson and Long, Analytical Biochemistry 180, 1989, pp. 147-151 Hunkapiller et al., 1984, Nature 310:105-111 R. Higuchi, B. Krummel, and R.K. Saiki (1988). A general method of in vitro preparation and specific mutagenesis of DNA fragments: study of protein and DNA interactions. Nucl. Acids Res. 16:7351-7367.

Dubnau et al., 1971, J. Mol. Biol. 56, pp. 209-221.

Gryczan etal., 1978, J. Bacteriol. 134, pp. 318-329. S. D. Erlich, 1977, Proc. Natl. Acad. Sci. 74, pp. 1680-1682.

Boel etal., 1990, Biochemistry29, pp. 6244-6249. SEQUENCE LISTING [0162] <110> Novozymes A/S <120> Alpha-amylase variants

<130> 5709.204-WO <140> PCT/DK99/00628 <141 > 1999-11-16 <150> DK PA 1998 01495 <151 > 1998-11-16 <160> 32 <170> Patentln version 3.1 <210> 1 <211 >485 <212> PRT <213> Bacillus sp. <400> 1

His His Asn Gly Thr Asn Gly Thr Met Met Gin Tyr Phe Glu Trp Tyr 1 5 10 15

Leu Pro Asn Asp Gly Asn His Trp Asn Arg Leu Arg Asp Asp Ala Ala 20 25 30

Asn Leu Lys Ser Lys Gly Ile Thr Ala Val Trp lie Pro Pro Ala Trp 35 40 45

Lys Gly Thr Ser Gin Asn Asp Val Gly Tyr Gly Ala Tyr Asp Leu Tyr 50 55 60

Asp Leu Gly Glu Phe Asn Gin Lys Gly Thr Val Arg Thr Lys Tyr Gly 65 70 75 80

Thr Arg Asn Gin Leu Gin Ala Ala Val Thr Ser Leu Lys Asn Asn Gly 85 90 95

He Gin Val Tyr Gly Asp Val Val Met Asn His Lys Gly Gly Ala Asp 100 105 110

Gly Thr Glu He Val Asn Ala Val Glu Val Asn Arg Ser Asn Arg Asn 115 120 125

Glri Glu Thr Ser Gly Glu Tyr Ala He Glu Ala Trp Thr Lys Phe Asp 130 135 140

Pile Pro Gly Arg Gly Asn Asn His Ser Ser Phe Lys Trp Arg Trp Tyr 145 150 155 160

His Phe Asp Gly Thr Asp Trp Asp Gin Ser Arg Gin Leu Gin Asn Lys 165 170 175 lie Tyr Lys Phe Arg Gly Thr Gly Lys Ala Trp Asp Trp Glu Val Asp 180 185 190

Thr Glu Asn Gly Asn Tyr Asp Tyr Leu Met Tyr Ala Asp Val Asp Met 195 200 205

Asp His Pro Glu Val lie His Glu Leu Arg Asn Trp Gly Val Trp Tyr 210 215 220

Thr Asn Thr Leu Asn Leu Asp Gly Phe Arg lie Asp Ala Val Lys His 225 230 235 240

Ile Lys Tyr Ser Phe Thr Arg Asp Trp Leu Thr His Val Arg Asn Thr 245 250 255

Thr Gly Lys Pro Met Phe Ala Val Ala Glu Phe Trp Lys Asn Asp Leu 260 265 270

Gly Ala lie Glu Asn Tyr Leu Asn Lys Thr Ser Trp Asn His Ser Val 275 280 285

Phe Asp Val Pro Leu His Tyr Asn Leu Tyr Asn Ala Ser Asn Ser Gly 290 295 300

Gly Tyr Tyr Asp Met Arg Asn lie Leu Asn Gly Ser Val Val Gin Lys 305 310 315 320

His Pro Thr His Ala Val Thr Phe.Val Asp Asn His Asp Ser Gin Pro 325 330 335

Gly Glu Ala Leu Glu Ser Phe Val Gin Gin Trp Phe Lys Pro Leu Ala 340 345 350

Tyr Ala Leu Val Leu Thr Arg Glu Gin Gly Tyr Pro Ser Val Phe Tyr 355 360 365

Gly Asp Tyr Tyr Gly lie Pro Thr His Gly Val Pro Ala Met Lys Ser 370 375 380

Lys He Asp Pro Leu Leu Gin Ala Arg Gin Thr Phe Ala Tyr Gly Thr 385 390 395 400

Gin His Asp Tyr Phe Asp His His Asp lie lie Gly Trp Thr Arg Glu 405 410 415

Gly Asn Ser Ser His Pro Asn Ser Gly Leu Ala Thr lie Met Ser Asp 420 425 430

Gly Pro Gly Gly Asn Lys Trp Met Tyr Val Gly Lys Asn Lys Ala Gly 435 440 445

Gin Val Trp Arg Asp lie Thr Gly Asn Arg Thr Gly Thr Val Thr lie . 450 455 460

Asn Ala Asp Gly Trp Gly Asn Phe Ser Val Asn Gly Gly Ser Val Ser 465 470 475 480

Val Trp Val Lys Gin 485 <210> 2 <211 >485 <212> PRT <213> Bacillus sp. <400>2

His His Asn Gly Thr Asn Gly Thr Met Met Gin Tyr Phe Glu Trp His 1 5 10 15

Leu Pro Asn Asp Gly Asn His Trp Asn Arg Leu Arg Asp Asp Ala Ser 20 25 30

Asn Leu Arg Asn Arg Gly Ile Thr Ala Ile Trp Ile Pro Pro Ala Trp 35 40 45

Lys Gly Thr Ser Gin Asn Asp Val Gly Tyr Gly Ala Tyr Asp Leu Tyr 50 55 60

Asp Leu Gly Glu Phe Asn Gin Lys Gly Thr Val Arg Thr Lys Tyr Gly 65 70 75 80

Thr Arg Ser Gin Leu Glu Ser Ala Ile His Ala Leu Lys Asn Asn Gly 85 90 95

Val Gin Val Tyr Gly Asp Val Val Met Asn His Lys Gly Gly Ala Asp 100 105 110

Ala Thr Glu Asn Val Leu Ala Val Glu Val Asn Pro Asn Asn Arg Asn 115 120 125

Gin Glu Ile Ser Gly Asp Tyr Thr Ile Glu Ala Trp Thr Lys Phe Asp 130 135 140

Phe Pro Gly Arg Gly Asn Thr Tyr Ser Asp Phe Lys Trp Arg Trp Tyr 145 150 155 160

His Phe Asp Gly Val Asp Trp Asp Gin Ser Arg Gin Phe Gin Asn Arg 165 170 175

Ile Tyr Lys Phe Arg Gly Asp Gly Lys Ala Trp Asp Trp Glu Val Asp 180 185 190

Ser Glu Asn Gly Asn Tyr Asp Tyr Leu Met Tyr Ala Asp Val Asp Met 195 200 205

Asp His Pro Glu Val Val Asn Glu Leu Arg Arg Trp Gly Glu Trp Tyr 210 215 220

Thr Asn Thr Leu Asn Leu Asp Gly Phe Arg Ile Asp Ala Val Lys His 225 230 235 240

Ile Lys Tyr Ser Phe Thr Arg Asp Trp Leu Thr His Val Arg Asn Ala 245 250 255

Thr Gly Lys Glu Met Phe Ala Val Ala Glu Phe Trp Lys Asn Asp Leu 260 265 270

Gly Ala Leu Glu Asn Tyr Leu Asn Lys Thr Asn Trp Asn His Ser Val 275 280 285

Phe Asp Val Pro Leu His Tyr Asn Leu Tyr Asn Ala Ser Asn Ser Gly 290 295 300

Gly Asn Tyr Asp Met Ala'Lys Leu Leu Asn Gly Thr Val Val Gin Lys 305 310 315 320

His Pro Met His Ala Val Thr Phe Val Asp Asn His Asp Ser Gin Pro 325 330 335

Gly Glu Ser Leu Glu Ser Phe Val Gin Glu Trp Phe Lys Pro Leu Ala 340 345 350

Tyr Ala Leu Ile Leu Thr Arg Glu Gin Gly Tyr Pro Ser Val Phe Tyr 355 360 365

Gly Asp Tyr Tyr Gly Ile Pro Thr His Ser Val Pro Ala Met Lys Ala 370 375 380

Lys lie Asp Pro lie Leu Glu Ala Arg Gin Asn Phe Ala Tyr Gly Thr 385 390 395 400

Gin His Asp Tyr Phe Asp His His Asn lie lie Gly Trp Thr Arg Glu 405 410 415

Gly Asn Thr Thr His Pro Asn Ser Gly Leu Ala Thr lie Met Ser Asp 420 425 430

Gly Pro Gly Gly Glu Lys Trp Met Tyr Val Gly Gin Asn Lys Ala Gly 435 440 445

Gin Val Trp His Asp lie Thr Gly Asn Lys Pro Gly Thr Val Thr lie 450 455 460

Asn Ala Asp Gly Trp Ala Asn Phe Ser Val Asn Gly Gly Ser Val Ser 465 470 475 480 lie Trp Val Lys Arg 485

<210> 3 <211 > 514 <212> PRT <213> Bacillus stearothermophilus <400>3

Ala Ala Pro Phe Asn Gly Thr Met Met Gin Tyr Phe Glu Trp Tyr Leu 15 10 15

Pro Asp Asp Gly Thr Leu Trp Thr Lys Val Ala Asn Glu Ala Asn Asn 20 25 30

Leu Ser Ser Leu Gly lie Thr Ala Leu Trp Leu Pro Pro Ala Tyr Lys 35 40 45

Gly Thr Ser Arg Ser Asp Val Gly Tyr Gly Val Tyr Asp Leu Tyr Asp 50 55 60

Leu Gly Glu Phe Asn Gin Lys Gly Ala Val Arg Thr Lys Tyr Gly Thr 65 70 75 Θ0

Lys Ala Gin Tyr Leu Gin Ala Ile Gin Ala Ala His Ala Ala Gly Met 85 90 · 95

Gin Val Tyr Ala Asp Val Val Phe Asp His Lys Gly Gly Ala Asp Gly 100 105 110

Thr Glu Trp Val Asp Ala Val Glu Val Asn Pro Ser Asp Arg Asn Gin 115 120 125

Glu Ile Ser Gly Thr Tyr Gin Ile Gin Ala Trp Thr Lys Phe Asp Phe 130 135 140

Pro Gly Arg Gly Asn Thr Tyr Ser Ser Phe Lys Trp Arg Trp Tyr His 145 150 155 160

Phe Asp Gly Val Asp Trp Asp Glu Ser Arg Lys Leu Ser Arg Ile Tyr 165 170 175

Lys Phe Arg Gly Ile Gly Lys Ala Trp Asp Trp Glu Val Asp Thr Glu 180 185 190

Asn Gly Asn Tyr Asp Tyr Leu Met Tyr Ala Asp Leu Asp Met Asp His 195 200 205

Pro Glu Val Val Thr Glu Leu Lys Ser Trp Gly Lys Trp Tyr Val Asn 210 215 220

Thr Thr Asn Ile Asp Gly Phe Arg Leu Asp Ala Val Lys His Ile Lys 225 230 ‘ 235 240

Phe Ser Phe Phe Pro Asp Trp Leu Ser Asp Val Arg Ser Gin Thr Gly 245 250 255

Lys Pro Leu Phe Thr Val Gly Glu Tyr Trp Ser Tyr Asp Ile Asn Lys 260 265 270

Leu His Asn Tyr Ile Met Lys Thr Asn Gly Thr Met Ser Leu Phe Asp 275 280 285

Ala Pro Leu His Asn Lys Phe Tyr Thr Ala Ser Lys Ser Gly Gly Thr 290 295 300

Phe Asp Met Arg Thr Leu Met Thr Asn Thr Leu Met Lys Asp Gin Pro 305 310 315 320

Thr Leu Ala Val Thr Phe Val Asp Asn His Asp Thr Glu Pro Gly Gin 325 330 335

Ala Leu Gin Ser Trp Val Asp Pro Trp Phe Lys Pro Leu Ala Tyr Ala 340 345 350

Phe lie Leu Thr Arg Gin Glu Gly Tyr Pro Cys Val Phe Tyr Gly Asp 355 360 365

Tyr Tyr Gly lie Pro Gin Tyr Asn lie Pro Ser Leu Lys Ser Lys lie 370 375 380

Asp Pro Leu Leu lie Ala Arg Arg Asp Tyr Ala Tyr Gly Thr Gin His 385 390 395 400

Asp Tyr Leu Asp His Ser Asp lie lie Gly Trp Thr Arg Glu Gly Val 405 410 415

Thr Glu Lys Pro Gly Ser Gly Leu Ala Ala Leu lie Thr Asp Gly Pro 420 425 430

Gly Gly Ser Lys Trp Met Tyr Val Gly Lys Gin His Ala Gly Lys Val 435 440 445

Phe Tyr Asp Leu Thr Gly Asn Arg Ser Asp Thr Val Thr lie Asn Ser 450 455 460

Asp Gly Trp Gly Glu Phe Lys Val Asn Gly Gly Ser Val Ser Val Trp 465 ' 470 475 480

Val Pro Arg Lys Thr Thr Val Ser Thr lie Ala Trp Ser lie Thr Thr 485 490 495

Arg Pro Trp Thr Asp Glu Phe Val Arg Trp Thr Glu Pro Arg Leu Val 500 505 510

Ala Trp

<210> 4 <211 > 483 <212> PRT <213> Bacillus licheniformis <400>4

Ala Asn Leu Asn Gly Thr Leu Met Gin Tyr Phe Glu Trp Tyr Met Pro 1 5 10 15

Asn Asp Gly Gin His Trp Arg Arg Leu Gin Asn Asp Ser Ala Tyr Leu 20 25 30

Ala Glu His Gly Ile Thr Ala Val Trp Ile Pro Pro Ala Tyr Lys Gly 35 40 45

Thr Ser Gin Ala Asp Val Gly Tyr Gly Ala Tyr Asp Leu Tyr Asp Leu 50 55 €0

Gly Glu Phe His Gin Lys Gly Thr Val Arg Thr Lys Tyr Gly Thr Lys 65 70 75 80

Gly Glu Leu Gin Ser Ala Ile Lys Ser Leu His Ser Arg Asp Ile Asn 85 90 95

Val Tyr Gly Asp Val Val Ile Asn His Lys Gly Gly Ala Asp Ala Thr 100 105 110

Glu Asp Val Thr Ala Val Glu Val Asp Pro Ala Asp Arg Asn Arg Val 115 120 125

Ile Ser Gly Glu His Leu Ile Lys Ala Trp Thr His Phe His Phe Pro 130 135 140

Gly Arg Gly Ser Thr Tyr Ser Asp Phe Lys Trp His Trp Tyr His Phe 145 150 155 160

Asp Gly Thr Asp Trp Asp Glu Ser Arg Lys Leu Asn Arg Ile Tyr Lys 165 170 175

Phe Gin Gly Lys Ala Trp Asp Trp Glu Val Ser Asn Glu Asn Gly Asn 180 185 190

Tyr Asp Tyr Leu Met Tyr Ala Asp Ile Asp Tyr Asp His Pro Asp Val 195 200 205

Ala Ala Glu Ile Lys Arg Trp Gly Thr Trp Tyr Ala Asn Glu Leu Gin 210 215 220

Leu Asp Gly Phe Arg Leu Asp Ala Val Lys His Ile Lys Phe Ser Phe 225 230 235 240

Leu Arg Asp Trp. Val Asn His Val Arg Glu Lys Thr Gly Lys Glu Met 245 250 255

Phe Thr Val Ala Glu Tyr Trp Gin Asn Asp Leu Gly Ala Leu Glu Asn 260 265 270

Tyr Leu Asn Lys Thr Asn Phe Asn His Ser Val Phe Asp Val Pro Leu 275 280 285

His Tyr Gin Phe His Ala Ala Ser Thr Gin Gly Gly Gly Tyr Asp Met 290 295 300

Arg Lys Leu Leu Asn Gly Thr Val Val Ser Lys His Pro Leu Lys Ser 305 310 315 320

Val Thr Phe Val Asp Asn His Asp Thr Gin Pro Gly Gin Ser Leu Glu 325 330 335

Ser Thr Val Gin Thr Trp Phe Lys Pro Leu Ala Tyr Ala Phe lie Leu 340 345 350

Thr Arg Glu Ser Gly Tyr Pro Gin Val Phe Tyr Gly Asp Met Tyr Gly 355 360 365

Thr Lys Gly Asp Ser Gin Arg Glu lie Pro Ala Leu Lys His Lys lie 370 375 380

Glu Pro lie Leu Lys Ala Arg Lys Gin Tyr Ala Tyr Gly Ala Gin His 385 390 395 400

Asp Tyr Phe Asp His His Asp lie Val Gly Trp Thr Arg Glu Gly Asp 405 410 415

Ser Ser Val Ala Asn Ser Gly Leu Ala Ala Leu lie Thr Asp Gly Pro 420 425 430

Gly Gly Ala Lys Arg Met Tyr Val Gly Arg Gin Asn Ala Gly Glu Thr 435 440 445

Trp His Asp lie Thr Gly Asn Arg Ser Glu Pro Val Val lie Asn Ser 450 455 460

Glu Gly Trp Gly Glu Phe His Val Asn Gly Gly Ser Val Ser lie Tyr 465 470 475 480

Val Gin Arg

<210>5 <211 > 480 <212> PRT <213> Bacillus amyloliquefaciens <400>5

Val Asn Gly Thr Leu Met Gin Tyr Phe Glu Trp Tyr Thr Pro Asn Asp 1 5 10 15

Gly Gin His Trp Lys Arg Leu Gin Asn Asp Ala Glu His Leu Ser Asp 20 25 30

Ile Gly Ile Thr Ala Val Trp Ile Pro Pro Ala Tyr Lys Gly Leu Ser 35 40 45

Gin Ser Asp Asn Gly Tyr Gly Pro Tyr Asp Leu Tyr Asp Leu Gly Glu 50 55 60

Phe Gin Gin Lys Gly Thr .Val Arg Thr Lys Tyr Gly Thr Lys Ser Glu 65 70 75 80

Leu Gin Asp Ala Ile Gly Ser Leu His Ser Arg Asn Val Gin Val Tyr 85 90 95

Gly Asp Val Val Leu Asn His Lys Ala Gly Ala Asp Ala Thr Glu Asp 100 105 110

Val Thr Ala Val Glu Val Asn Pro Ala Asn Arg Asn Gin Glu Thr Ser 115 120 125

Glu Glu Tyr Gin Ile Lys Ala Trp Thr Asp Phe Arg Phe Pro Gly Arg 130 135 140

Gly Asn Thr Tyr Ser Asp Phe Lys· Trp His Trp Tyr His Phe Asp Gly 145 150 155 1€0

Ala Asp Trp Asp Glu Ser Arg Lys Ile Ser Arg Ile Phe Lys Phe Arg 165 170 175

Gly Glu Gly Lys Ala Trp Asp Trp Glu Val Ser Ser Glu Asn Gly Asn 180 185 190

Tyr Asp Tyr Leu Met Tyr Ala Asp Val Asp Tyr Asp His Pro Asp Val 195 200 205

Val Ala Glu Thr Lys Lys Trp Gly Ile Trp Tyr Ala Asn Glu Leu Ser 210 215 220

Leu Asp Gly Phe Arg Ile Asp Ala Ala Lys His Ile Lys Phe Ser Phe 225 230 235 240

Leu Arg Asp Trp Val Gin Ala Val Arg Gin Ala Thr Gly Lys Glu Met 245 250 255

Phe Thr Val Ala Glu Tyr Trp Gin Asn Asn Ala Gly Lys Leu Glu Asn 260 265 270

Tyr Leu Asn Lys Thr Ser Phe Asn Gin Ser Val Phe Asp Val Pro Leu 275 280 285

His Phe Asn Leu Gin Ala Ala Ser Ser Gin Gly Gly Gly Tyr Asp Met 290 295 300

Arg Arg Leu Leu Asp Gly Thr Val Val Ser Arg His Pro Glu Lys Ala 305 310 315 320

Val Thr Phe Val Glu Asn His Asp Thr Gin Pro Gly Gin Ser Leu Glu 325 330 335

Ser Thr Val Gin Thr Trp Phe Lys Pro Leu Ala Tyr Ala Phe lie Leu 340 345 350

Thr Arg Glu Ser Gly Tyr Pro Gin Val Phe Tyr Gly Asp Met Tyr Gly 355 360 365

Thr Lys Gly Thr Ser Pro Lys Glu lie Pro Ser Leu Lys Asp Asn lie 370 375 380

Glu Pro lie Leu Lys Ala Arg Lys Glu Tyr Ala Tyr Gly Pro Gin His 385 390 395 400

Asp Tyr lie Asp His Pro Asp Val lie Gly Trp Thr Arg Glu Gly Asp 405 410 415

Ser Ser Ala Ala Lys Ser Gly Leu Ala Ala Leu lie Thr Asp Gly Pro 420 425 430

Gly Gly Ser Lys Arg Met Tyr Ala Gly Leu Lys Asn Ala Gly Glu Thr 435 440 445

Trp Tyr Asp lie Thr Gly Asn Arg Ser Asp Thr Val Lys lie Gly Ser 450 455 460

Asp Gly Trp Gly Glu Phe His Val Asn Asp Gly Ser Val Ser lie Tyr 465 470 475 480 <210> 6 <211 >485 <212> PRT <213> Bacillus sp. <400>6

His His Asn Gly Thr Asn Gly Thr Met Met Gin Tyr Phe Glu Trp Tyr 15 10 15

Leu Pro Asn Asp Gly Asn His Trp Asn Arg Leu Asn Ser Asp Ala Ser 20 25 30

Asn Leu Lys Ser Lys Gly Ile Thr Ala Val Trp Ile Pro Pro Ala Trp 35 40 45

Lys Gly Ala Ser Gin Asn Asp Val Gly Tyr Gly Ala Tyr Asp Leu Tyr 50 55 60

Asp Leu Gly Glu Phe Asn Gin Lys Gly Thr Val Arg Thr Lys Tyr Gly 65 70 75 80

Thr Arg Ser Gin Leu Gin Ala Ala Val Thr Ser Leu Lys Asn Asn Gly 85 90 95

Ile Gin Val Tyr Gly Asp Val Val Met Asn His Lys Gly Gly Ala Asp 100 105 110

Ala Thr Glu Met Val Arg Ala Val Glu Val Asn Pro Asn Asn Arg Asn 115 120 125

Gin Glu Val Thr Gly Glu Tyr Thr Ile Glu Ala Trp Thr Arg Phe Asp 130 135 140

Phe Pro Gly Arg Gly Asn Thr His Ser Ser Phe Lys Trp Arg Trp Tyr 145 150 155 160

His Phe Asp Gly Val Asp Trp Asp Gin Ser Arg Arg Leu Asn Asn Arg 165 170 175

Ile Tyr Lys Phe Arg Gly His Gly Lys Ala Trp Asp Trp Glu Val Asp 180 185 190

Thr Glu Asn Gly Asn Tyr Asp Tyr Leu Met Tyr Ala Asp Ile Asp Met 195 200 205

Asp His Pro Glu Val Val Asn Glu Leu Arg Asn Trp Gly Val Trp Tyr 210 215 220

Thr Asn Thr Leu Gly Leu Asp Gly Phe Arg Ile Asp Ala Val Lys His 225 230 235 240

Ile Lys Tyr Ser Phe Thr Arg Asp Trp Ile Asn His Val Arg Ser Ala 245 250 255

Thr Gly Lys Asn Met Phe Ala Val Ala Glu Phe Trp Lys Asn Asp Leu 260 265 270

Gly Ala Ile Glu Asn Tyr Leu Gin Lys Thr Asn Trp Asn His Ser Val 275 280 285

Phe Asp Val Pro Leu His Tyr Asn Leu Tyr Asn Ala Ser Lys Ser Gly 290 295 300

Gly Asn Tyr Asp Met Arg Asn Ile Phe Asn Gly Thr Val Val Gin Arg 305 310 315 320

His Pro Ser His Ala Val Thr Phe Val Asp Asn His Asp Ser Gin Pro 325 330 335

Glu Glu Ala Leu Glu Ser Phe Val Glu Glu Trp Phe Lys Pro Leu Ala 340 345 350

Tyr Ala Leu Thr Leu Thr Arg Glu Gin Gly Tyr Pro Ser Val Phe Tyr 355 360 365

Gly Asp Tyr Tyr Gly Ile Pro Thr His Gly Val Pro Ala Met Arg Ser 370 375 380

Lys Ile Asp Pro Ile Leu Glu Ala Arg Gin'Lys Tyr Ala Tyr Gly Lys 385 390 395 400

Gin Asn Asp Tyr Leu Asp His His Asn Ile Ile Gly Trp Thr Arg Glu 405 410 ‘ 415

Gly Asn Thr Ala His Pro Asn Ser Gly Leu Ala Thr Ile Met Ser Asp 420 425 430

Gly Ala Gly Gly Ser Lys Trp Met Phe Val Gly Arg Asn Lys Ala Gly 435 440 445 .

Gin Val Trp Ser Asp Ile Thr Gly Asn Arg Thr Gly Thr Val Thr Ile 450 455 460

Asn Ala Asp Gly Trp Gly Asn Phe Ser Val Asn Gly Gly Ser Val Ser 465 470 475 480

Ile Trp Val Asn Lys 485 <210>7 <211 >485 <212> PRT <213> Bacillus sp. <400>7

His His Asn Gly Thr Asn Gly Thr Met Met Gin Tyr Phe Glu Trp Tyr 15 10 15

Leu Pro Asn Asp Gly Asn His Trp Asn Arg Leu Arg Asp Asp Ala Ala 20 25 30

Asn Leu Lys Ser Lys Gly Ile Thr Ala Val Trp Ile Pro Pro Ala Trp 35 40 45

Lys Gly Thr Ser Gin Asn Asp Val Gly Tyr Gly Ala Tyr Asp Leu Tyr 50 55 60

Asp Leu Gly Glu Phe Asn Gin Lys Gly Thr Val Arg Thr Lys Tyr Gly 65 70 75 80

Thr Arg Asn Gin Leu Gin Ala Ala Val Thr Ser Leu Lys Asn Asn Gly 85 90 95

Ile Gin Val -Tyr Gly Asp Val Val Met Asn His Lys Gly Gly Ala Asp 100 105 110

Gly Thr Glu Ile Val Asn Ala Val Glu Val Asn Arg Ser Asn Arg Asn 115 120 125

Gin Glu Thr Ser Gly Glu Tyr Ala Ile Glu Ala Trp Thr Lys Phe' Asp 130 135 140

Phe Pro Gly Arg Gly Asn Asn His Ser Ser Phe Lys Trp Arg Trp Tyr 145 150 155 160

His Phe Asp Gly Thr Asp Trp Asp Gin Ser Arg Gin Leu Gin Asn Lys 165 170 175

Ile Tyr Lys Phe Arg Gly Thr Gly Lys Ala Trp Asp Trp Glu Val Asp 180 185 190

Thr Glu Asn Gly Asn Tyr Asp Tyr Leu Met Tyr Ala Asp Val Asp Met 195 200 205

Asp His Pro Glu Val Ile His Glu Leu Arg Asn Trp Gly Val Trp Tyr 210 215 220

Thr Asn Thr Leu Asn Leu Asp Gly Phe Arg Ile Asp Ala Val Lys His 225 230 235 240

Ile Lys Tyr Ser Phe Thr Arg Asp Trp Leu Thr His Val Arg Asn Thr 245 250 255

Thr Gly Lys Pro Met Phe Ala Val Ala Glu Phe Trp Lys Asn Asp Leu 260 265 270

Gly Ala Ile Glu Asn Tyr Leu Asn Lys Thr Ser Trp Asn His Ser Val 275 280 285

Phe Asp Val Pro Leu His Tyr Asn Leu Tyr Asn Ala Ser Asn Ser Gly 290 295 300

Gly Tyr Tyr Asp Met Arg Asn Ile Leu Asn Gly Ser Val Val Gin Lys 305 310 315 320

His Pro Thr His Ala Val Thr Phe Val Asp Asn His Asp Ser Gin Pro 325 330 335

Gly Glu Ala Leu Glu Ser Phe Val Gin Gin Trp Phe Lys Pro Leu Ala 340 345 350

Tyr Ala Leu Val Leu Thr Arg Glu Gin Gly Tyr Pro Ser Val. Phe Tyr 355 360 365

Gly Asp Tyr Tyr Gly Ile Pro Thr His Gly Val Pro Ala Met Lys Ser 370 375 380

Lys Ile Asp Pro Leu Leu Gin Ala Arg Gin Thr Phe Ala Tyr Gly Thr 385 390 395 400

Gin His Asp Tyr Phe Asp His His Asp Ile Ile Gly Trp Thr Arg Glu 405 410 415

Gly Asn Ser Ser His Pro Asn Ser Gly Leu Ala Thr Ile Met Ser Asp 420 425 430

Gly Pro Gly Gly Asn Lys Trp Met Tyr Val Gly Lys Asn Lys Ala Gly 435 440 445

Gin Val Trp Arg Asp Ile Thr Gly Asn Arg Thr Gly Thr Val Thr Ile 450 455 460

Asn Ala Asp Gly Trp Gly Asn Phe Ser Val Asn Gly Gly Ser Val Ser 465 470 475 480

Val Trp Val Lys Gin 485 <210> 8 <211 >485 <212> PRT <213> Bacillus sp. <400>8

His His Asn Gly Thr Asn Gly Thr Met Met Gin Tyr Phe Glu Trp His 1 5 10 '15

Leu Pro Asn Asp Gly Asn His Trp Asn Arg Leu Arg Asp Asp Ala Ser 20 25 30

Asn Leu Arg Asn Arg Gly Ile Thr Ala Ile Trp Ile Pro Pro Ala Trp 35 40 45

Lys Gly Thr Ser Gin Asn Asp Val Gly Tyr Gly Ala Tyr Asp Leu Tyr 50 55 60

Asp Leu Gly Glu Phe Asn Gin Lys Gly Thr Val Arg Thr Lys Tyr Gly 65 70 75 80

Thr Arg Ser Gin Leu Glu Ser Ala Ile His Ala Leu Lys Asn Asn Gly 85 90 95

Val Gin Val Tyr Gly Asp Val Val Met Asn His Lys Gly Gly Ala Asp 100 105 110

Ala Thr Glu Asn Val Leu Ala Val Glu Val Asn Pro Asn Asn Arg Asn 115 120 125

Gin Glu Ile Ser Gly Asp Tyr Thr Ile Glu Ala Trp Thr Lys Phe Asp 130 135 140

Phe Pro Gly Arg Gly Asn Thr Tyr Ser Asp Phe Lys Trp Arg Trp Tyr 145 150 155 160

His Phe Asp Gly Val Asp Trp Asp Gin Ser Arg Gin Phe Gin Asn Arg 165 170 175

Ile Tyr Lys Phe Arg Gly Asp Gly Lys Ala Trp Asp Trp Glu Val Asp 180 185 190

Ser Glu Asn Gly Asn Tyr Asp Tyr Leu Met Tyr Ala Asp Val Asp Met 195 200 205

Asp His Pro Glu Val Val Asn Glu Leu Arg Arg Trp Gly Glu Trp Tyr 210 215 220

Thr Asn Thr Leu Asn Leu Asp Gly Phe Arg Ile Asp Ala Val Lys His 225 230 235 240 lie Lys Tyr Ser Phe Thr Arg Asp Trp Leu Thr His Val Arg Asn Ala 245 250 255

Thr Gly Lys Glu Met Phe Ala Val Ala Glu Phe Trp Lys Asn Asp Leu 260 265 270

Gly Ala Leu Glu Asn Tyr Leu Asn Lys Thr Asn Trp Asn His Ser Val 275 280 285

Phe Asp Val Pro Leu His Tyr Asn Leu Tyr Asn Ala Ser Asn Ser Gly 290 295 300

Gly Asn Tyr Asp Met Ala Lys Leu Leu Asn Gly Thr Val Val Gin Lys 305 310 315 320

His Pro Met His Ala Val Thr Phe Val Asp Asn His Asp Ser Gin Pro 325 330 335

Gly Glu Ser Leu Glu Ser Phe Val Gin Glu Trp Phe Lys Pro Leu Ala 340 345 350

Tyr Ala Leu lie Leu Thr Arg Glu Gin Gly Tyr Pro Ser Val Phe Tyr 355 360 365

Gly Asp Tyr Tyr Gly lie Pro Thr His Ser Val Pro Ala Met Lys Ala 370 375 380

Lys lie Asp Pro lie Leu Glu Ala Arg Gin Asn Phe Ala Tyr Gly Thr 385 390 395 400

Gin His Asp Tyr Phe Asp His His Asn lie lie Gly Trp Thr Arg Glu 405 410 415

Gly Asn Thr Thr His Pro Asn Ser Gly Leu Ala Thr He Met Ser Asp 420 425 430

Gly Pro Gly Gly Glu Lys Trp Met Tyr Val Gly Gin Asn Lys Ala Gly 435 440 445

Gin Val Trp His Asp lie Thr Gly Asn Lys Pro Gly Thr Val Thr lie 450 455 460

Asn Ala Asp Gly Trp Ala Asn Phe Ser Val Asn Gly Gly Ser Val Ser 465 470 475 480

He Trp Val Lys Arg 485 <210> 9 <211> 1455 <212> DNA <213> Bacillus sp. <400>9 catcataatg gaacaaatgg tactatgatg caatatttcg aatggtattt gccaaatgac 60 gggaatcatt ggaacaggtt gagggatgac gcagctaact taaagagtaa agggataaca 120 gctgtatgga tcccacctgc atggaagggg acttcccaga atgatgtagg ttatggagcc 180 tatgatttat atgatcttgg agagtttaac cagaagggga cggttcgtac aaaatatgga 240 acacgcaacc agctacaggc tgcggtgacc tctttaaaaa ataacggcat tcaggtatat 300 ggtgatgtcg tcatgaatca taaaggtgga gcagatggta cggaaattgt aaatgcggta 360 gaagtgaatc ggagcaaccg aaaccaggaa acctcaggag agtatgcaat agaagcgtgg 420 acaaagtttg attttcctgg aagaggaaat aaccattcca gctttaagtg gcgctggtat 480 cattttgatg ggacagattg ggatcagtca cgccagcttc aaaacaaaat atataaattc 540 aggggaacag gcaaggcctg ggactgggaa gtcgatacag agaatggcaa ctatgactat 600 cttatgtatg cagacgtgga tatggatcac ccagaagtaa tacatgaact tagaaactgg ^60 ggagtgtggt atacgaatac actgaacctt gatggattta gaatagatgc agtgaaacat 720 ataaaatata gctttacgag agattggctt acacatgtgc gtaacaccac aggtaaacca 700 atgtttgcag tggctgagtt ttggaaaaat gaccttggtg caattgaaaa ctatttgaat 840 aaaacaagtt ggaatcactc ggtgtttgat gttcctctcc actataattt gtacaatgca 900 tctaatagcg gtggttatta tgatatgaga aatattttaa atggttctgt ggtgcaaaaa 960 catccaacac atgccgttac ttttgttgat aaccatgatt ct-cagcccgg ggaagcattg 1020 gaatcctttg ttcaacaatg gtttaaacca cttgcatatg cattggttct gacaagggaa 1080 caaggttatc cttccgtatt ttatggggat tactacggta tcccaaccca tggtgttccg 1140 gctatgaaat ctaaaataga ccctcttctg caggcacgtc aaacttttgc ctatggtacg 1200 cagcatgatt actttgatca tcatgatatt atcggttgga caagagaggg aaatagctcc 1260 catccaaatt caggccttgc caccattatg tcagatggtc caggtggtaa caaatggatg 1320 tatgtgggga aaaataaagc gggacaagtt tggagagata ttaccggaaa taggacaggc 1380 accgtcacaa ttaatgcaga cggatggggt aatttctctg ttaatggagg gtccgtttcg 1440 gtttgggtga agcaa 1455 <210> 10 <211 > 1455 <212> DNA <213> Bacillus sp. <400> 10 catcataatg ggacaaatgg gacgatgatg caatactttg aatggcactt gcctaatgat 60 gggaatcact ggaatagatt aagagatgat gctagtaatc taagaaatag aggtataacc 120 gctatttgga· ttccgcctgc ctggaaaggg acttcgcaaa atgatgtggg gtatggagcc 180 tatgatcttt atgatttagg ggaatttaat caaaagggga cggttcgtac taagtatggg 240 acacgtagtc aattggagtc tgccatccat g-ctttaaaga ataatggcgt tcaagtttat 300 ggggatgtag tgatgaacca taaaggagga gctgatgcta cagaaaacgt tcttgctgtc 360 gaggtgaatc caaataaccg gaatcaagaa atatctgggg actacacaat tgaggcttgg 420 actaagtttg attttccagg gaggggtaat acatactcag actttaaatg gcgttggtat 480 catttcgatg gtgtagattg ggatcaatca cgacaattcc aaaatcgtat ctacaaattc 540 cgaggtgatg gtaaggcatg ggattgggaa gtagattcgg aaaatggaaa ttatgattat 600 ttaatgtatg cagatgtaga tatggatcat ccggaggtag taaatgagct tagaagatgg 660 ggagaatggt atacaaatac attaaatctt gatggattta ggatcgatgc ggtgaagcat 720 attaaatata gctttacacg tgattggttg acccatgtaa gaaacgcaac gggaaaagaa 780 atgtttgctg ttgctgaatt ttggaaaaat gatttaggtg ccttggagaa ctatttaaat 840 aaaacaaact ggaatcattc tgtctttgat gtcccccttc attataatct ttataacgcg 900 tcaaatagtg gaggcaacta tgacatggca aaacttctta atggaacggt tgttcaaaag 960 catccaatgc atgccgtaac ttttgtggat aatcacgatt -ctcaacctgg ggaatcatta 1020 gaatcatttg tacaagaatg.gtttaagcca cttgcttatg cgcttatttt aacaagagaa 1080 caaggctatc cctctgtctt ctatggtgac tactatggaa ttccaacaca tagtgtccca 1140 gcaatgaaag ccaagattga tccaatctta gaggcgcgtc aaaattttgc atatggaaca 1200 caacatgatt attttgacca tcataatata atcggatgga cacgtgaagg aaataccacg 1260 catcccaatt caggacttgc gactatcatg tcggatgggc cagggggaga gaaatggatg 1320 tacgtagggc aaaataaagc aggtcaagtt tggcatgaca taactggaaa taaaccagga 1380 acagttacga tcaatgcaga tggatgggct aatttttcag taaatggagg atctgtttcc 1440 atttgggtga aacga 1455

<210> 11 <211> 1548 <212> DNA <213> Bacillus stearothermophilus <400> 11 gccgcaccgt ttaacggcac catgatgcag tattttgaat ggtacttgcc ggatgatggc 60 acgttatgga ccaaagtggc caatgaagcc aacaacttat ccagccttgg catcaccgct 120 ctttggctgc cgcccgctta caaaggaaca agccgcagcg acgtagggta cggagtatac 180 gacttgtatg acctcggcga attcaatcaa aaagggacpg tccgcacaaa atacggaaca 240 aaagctcaat atcttcaagc cattcaagcc gcccacgccg ctggaatgca agtgtacgcc 300 gatgtcgtgt tcgaccataa aggcggcgct gacggcacgg aatgggtgga cgccgtcgaa 360 gtcaatccgt ccgaccgcaa ccaagaaatc tcgggcacct atcaaatcca agcatggacg 420 aaatttgatt ttcccgggcg gggcaacacc tactccagct ttaagtggcg ctggtaccat 480 tttgacggcg ttgattggga cgaaagccga aaattgagcc gcatttacaa attccgcggc 540 atcggcaaag cgtgggattg ggaagtagac acggaaaacg gaaactatga ctacttaatg 600 tatgccgacc ttgatatgga tcatcccgaa gtcgtgaccg agctgaaaaa ctgggggaaa 660 tggtatgtca acacaacgaa cattgatggg ttccggcttg atgccgtcaa gcatattaag 720 ttcagttttt ttcctgattg gttgtcgtat gtgcgttctc agactggcaa gccgctattt 780 accgtcgggg aatattggag ctatgacatc aacaagttgc acaattacat tacgaaaaca 840 gacggaacga tgtctttgtt tgatgccccg ttacacaaca aattttatac cgcttccaaa 900 tcagggggcg catttgatat gcgcacgtta atgaccaata ctctca-tgaa agatcaaccg 960 acattggccg tcaccttcgt tgataat.cat gacac-cgaac ocggccaagc gctgcagtca 1020 tgggtcgacc catggttcaa accgttggct tacgccttta ttctaactcg gcaggaagga 1080 taccqgtgcg tcttttatgg tgactattat ggcattccac aatataacat tccttcgctg 1140 aaaagcaaaa tcgatccgct cctcatcgcg cgcagggatt atgcttacgg aacgcaacat 1200 gattatcttg atcactccga catcatcggg tggacaaggg aagggggcac tgaaaaacca 1260 ggatccggac tggccgcact gatcaccgat gggccgggag gaagcaaatg gatgtacgtt 1320 ggcaaacaac acgctggaaa agtgttctat gaocttaccg gcaaccggag tgacaccgtc 1380 accatcaaca gtgatggatg gggggaattc aaagtcaatg gcggttcggt ttcggtttgg 1440 gttcctagaa aaacgaccgt ttctaccatc gctcggccga tcacaacccg accgtggact 1500 ggtgaattcg tccgttggac cgaaccacgg ttggtggcat ggccttga 1548

<210> 12 <211> 1920 <212> DNA <213> Bacillus licheniformis <220> <221 > misc_feature <222> (421)..(1872)

<223> CDS <400> 12 cggaagattg gaagtacaaa aataagcaaa agattgtcaa tcatgtcatg agccatgcgg 60 gagacggaaa aatcgtctta atgcacgata tttatgcaac gttcgcagat gctgctgaag 120 agattattaa aaagctgaaa gcaaaaggct atcaattggt aactgtatct cagcttgaag 180 aagtgaagaa gcagagaggc tattgaataa atgagtagaa gcgccatatc ggcgcttttc 240 ttttggaaga aaatataggg aaaatggtac ttgttaaaaa ttcggaatat ttatacaaca 300 tcatatgttt cacattgaaa ggggaggaga atcatgaaac aacaaaaacg gctttacgcc 360 cgattgctga cgctgttatt tgcgctcatc ttcttgctgc ctcattctgc agcagcggcg 420 gcaaatctta atgggacgct gatgcagtat tttgaatggt acatgcccaa tgacggccaa 480 cattggaggc gtttgcaaaa cgactcggca tatttggctg aacacggtat tactgccgtc 540 tggattcccc cggcatataa gggaacgagc caagcggatg tgggctacgg tgcttacgac 600 ctttatgatt taggggagtt tcatcaaaaa gggacggttc ggacaaagta cggcacaaaa 660 ggagagctgc aatctgcgat caaaagtctt cattcccgcg acattaacgt ttacggggat 720 gtggtcatca accacaaagg cggcgctgat gcgaccgaag atgtaaccgc ggttgaagtc .780 gatcccgctg accgcaaccg cgtaatttca ggagaacacc taattaaagc ctggacacat 840 tttcattttc cggggcgcgg cagcacatac agcgatttta aatggcattg gtaccatttt 900 gacggaaccg attgggacga gtcccgaaag ctgaaccgca tctataagtt tcaaggaaag 960 gcttgggatt gggaagtttc caatgaaaac ggcaactatg attatttgat gtatgccgac 1020 atcgattatg accatcctga tgtcgcagca gaaattaaga gatggggcac ttggtatgcc 1080 aatgaactgc aattggacgg tttccgtctt gatgctgtca aacacattaa attttctttt 1140 ttgcgggatt gggttaatca tgtcagggaa aaaacgggga aggaaatgtt tacggtagct 1200 gaatattggc agaatgactt gggcgcgctg gaaaactatt tgaacaaaac aaattttaat 1260 cattcagtgt ttgacgtgcc gcttcattat cagttccatg ctgcatcgac acagggaggc 1320 ggctatgata tgaggaaatt gctgaacggt acggtcgttt ccaagcatcc gttgaaatcg 1380 gttacatttg tcgataacca tgatacacag ccggggcaat cgcttgagtc gactgtccaa 1440 acatggttta agccgcttgc ttacgctttt attctcacaa gggaatctgg ataccctcag 1500 gttttctacg gggatatgta cgggacgaaa ggagactecc agcgcgaaat tcctgccttg 1560 aaacacaaaa ttgaaccgat cttaaaagcg agaaaacagt atgegtacgg agcacagcat 1620 gattatttcg accaccatga cattgtcggc tggacaaggg aaggcgacag ctcggttgca 1680 aattcaggtt tggcggcatt aataacagac ggacccggtg gggcaaagcg aatgtatgtc 1740 ggccggcaaa acgccggtga gacatggcat gacattaccg gaaaccgttc ggagccggtt 1800 gtcatcaatt cggaaggctg gggagagttt cacgtaaacg gcgggtcggt ttcaatttat 1860 gttcaaagat agaagagcag agaggacgga tttcctgaag gaaatccgtt tttttatttt 1920 <210> 13 <211 > 1455 <212> DNA <213> Bacillus sp. <400> 13 catcataatg gaacaaatgg tactatgatg caatatttcg aatggtattt gccaaatgac 60 gggaatcatt ggaacaggtt gagggatgac gcagctaact taaagagtaa agggataaca 120 gctgtatgga tcccacctgc atggaagggg acttcccaga atgatgtagg ttatggagcc 180 tatgatttat atgatcttgg agagtttaac cagaagggga cggttcgtac aaaatatgga 240 acacgcaacc agctacaggc tgcggtgacc tctttaaaaa ataacggcat tcaggtatat 300 ggtgatgtcg tcatgaatca taaaggtgga gcagatggta cggaaattgt aaatgcggta 360 gaagtgaatc ggagcaaccg aaaccaggaa acctcaggag agtatgcaat agaagcgtgg 420 acaaagtttg attttcctgg aagaggaaat aaccattcca gctttaagtg gcgctggtat 480 cattttgatg ggacagattg ggatcagtca cgccagcttc aaaacaaaat atataaattc 540 aggggaacag gcaaggcctg ggactgggaa gtcgatacag agaatggcaa ctatgactat €00 cttatgtatg cagacgtgga tatggatcac ccagaagtaa tacatgaact tagaaactgg €60 ggagtgtggt atacgaatac actgaacctt gatggattta gaatagatgc agtgaaacat 720 ataaaatata gctttacgag agattggctt acacatgtgc gtaacaccac agg-taaacca 780 atgtttgcag tggctgagtt ttggaaaaat gaccttggtg caattgaaaa ctatttgaat 840 aaaacaagtt ggaatcactc ggtgtttgat gttcctctcc actataattt gtacaatgca 900 tctaatagcg gtggttatta tgatatgaga aatattttaa atggtt-ctgt ggtgcaaaaa 960 catccaacac atgccgttac ttttgttgat aaccatgatt ctcagcccgg ggaagcattg 1020 gaatcctttg ttcaacaatg gtttaaacca cttgcatatg cattggttct gacaagggaa 1080 caaggttatc cttccgtatt ttatggggat tactacggta tcccaaccca tggtgttccg 1140 gctatgaaat ctaaaataga ccctcttctg caggcacgtc aaacttttgc ctatggtacg 1200 cagcatgatt actttgatca tcatgatatt atcggttgga -caagagaggg aaatagctcc 1260 catccaaatt caggccttgc caccattatg tcagatggtc caggtggtaa caaatggatg 1320 tatgtgggga aaaataaagc gggacaagtt tggagagatå ttaccggaaa taggacaggc 1380 accgtcacaa ttaatgcaga cggatggggt aattt-ctctg ttaatggagg gtccgtttcg 1440 gtttgggtga agcaa 1455 <210> 14 <211 > 1455 <212> DNA <213> Bacillus sp. <400> 14 catcataatg ggacaaatgg gacgatgatg caatactttg aatggcactt gcctaatgat 60 gggaatcact ggaatagatt aagagatgat gctagtaatc taagaaatag aggtataacc 120 gctatttgga ttccgcctgc ctggaaaggg acttcgcaaa atgatgtggg gtatggagcc 180 tatgatcttt atgatttagg ggaatttaat caaaagggga cggttcgtac taagtatggg 240 acacgtagtc aattggagtc tgccatccat gctttaaaga ataatggcgt tcaagtttat 300 ggggatgtag tgatgaacca taaaggagga gctgatgcta cagaaaacgt tcttgctgtc 360 gaggtgaatc caaataaccg gaatcaagaa atatctgggg actacacaat tgaggcttgg 420 actaagtttg attttccagg gaggggtaat acatactcag actttaaatg gcgttggtat 480 catttcgatg gtgtagattg ggatcaatca cgacaattcc aaaatcgtat ctacaaattc 540 cgaggtgatg gtaaggcatg ggattgggaa gtagattcgg aaaatggaaa ttatgattat 600 ttaatgtatg cagatgtaga tatggatcat ccggaggtag taaatgagct tagaagatgg €60 ggagaatggt atacaaatac attaaatctt gatggattta ggatcgatgc ggtgaagcat 720 attaaatata gctttacacg tgattggttg acccatgtaa gaaacgcaac gggaaaagaa 780 atgtttgctg ttgctgaatt ttggaaaaat gatttaggtg ccttggagaa ctatttaaat 840 aaaacaaact ggaatcattc tgtctttgat gtcccccttc attataatct ttataacgcg 900 tcaaatagtg gaggcaacta tgacatggca aaacttctta atggaacggt tgttcaaaag 960 catccaatgc atgccgtaac ttttgtggat aatcacgatt ctcaacctgg ggaatcatta 1020 gaatcatttg tacaagaatg gtttaagcca cttgcttatg cgcttatttt aacaagagaa 1080 caaggctatc cctctgtctt ctatggtgac tactatggaa ttccaacaca tagtgtccca 1140 gcaatgaaag ccaagattga tccaatctta gaggcgcgtc aaaattttgc atatggaaca 1200 caacatgatt attttgacca tcataatata atcggatgga cacgtgaagg aaataccacg 1260 catcccaatt caggacttgc gactatcatg tcggatgggc -cagggggaga gaaatggatg 1320 tacgtagggc aaaataaagc aggtcaagtt tggcatgaca taactggaaa taaaocagga 1380 acagttacga tcaatgcaga tggatgggct aatttttcag taaatggagg at-ctgtttcc 1440 atttgggtga aacga 1455

<210> 15 <211> 74 <212> DNA <213> Artificial sequence <220> <223> Primer RSERI <220> <221 > misc_feature <222> (21)..(62) <223> The nucleotides in positions 21-62 were synthesized as: 3122343222 4333313344 4233423242 2122112433 43, where 1: (97%A, 1%T, 1%C, 1%G); 2:(97%T, 1%A, 1%C, 1%G); 3:(97%C, 1%A, 1%T, 1%G); and 4: (97%G, 1%A, 1%T, 1%C). <400> 15 gcgttttgcc ggccgacata nnnnnnnnnn. nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 60 nncaaacctg aatt 74

<210> 16 <211 > 122 <212> DNA <213> Artificial sequence <220> <223> Primer RSERII <220> <221 > misc_feature <222> (63)..(104) <223> The nucleotides in positions 73-114 were synthesized as: 31113324 1122243113 3414324234 3322333224 2331, where 1 :(97%A, 1%T, 1 %C, 1%G); 2:(97%T, 1%A, 1 %C, 1%G); 3:(97%C, 1%A, 1%T, 1%G); and 4:(97%G, 1%A, 1%T, 1%C). <400> 16 gcgttttgcc ggccgacata cattcgcttt gccccaccgg gtccgtctgt tattaatgcc 60 gcnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnngccgac aatgtcatgg 120 tg 122

<210> 17 <211> 78 <212> DNA <213> Artificial sequence <220>

<223> Primer RSERIII <220> <221 > misc_feature <222> (19)..(60) <223> The nucleotides in positions 19-60 were synthesized as: 43 3413112423 1244244234 1112112312 4324243233, where 1: (97%A, 1%T, 1%C, 1 %G); 2:(97%T, 1%A, 1%C, 1%G); 3:(97%C, 1%A, 1%T, 1%G); and 4:(97%G, 1%A, 1%T, 1%C). <400> 17 gtcgccttcc cttgtccann nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 60 gtacgcatac tgttttct 78

<210> 18 <211> 20 <212> DNA <213> Artificial sequence <220> <223> Primer FSERIII <400> 18 tggacaaggg aaggcgacag 20

<210> 19 <211 > 81 <212> DNA <213> Artificial sequence <220> <223> Primer RSERV <220> <221 > misc_feature <222> (19)..(60) <223> The nucleotides in positions 19-60 were synthesized as: 42 4222311443 1441122234 3432444142 3233222342, where 1: (97%A, 1%T, 1%C, 1 %G); 2:(97%T, 1%A, 1%C, 1%G); 3:(97%C, 1%A, 1%T, 1%G); and 4:(97%G, 1%A, 1%T, 1%C). <400> 19 taagatcggt tcaattttnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 60 cccgtacata tccccgtaga a 81

<210> 20 <211 > 18 <212> DNA <213> Artificial sequence <220> <223> Primer FSERV <400> 20 aaaattgaac cgatctta 18

<210> 21 <211> 107 <212> DNA <213> Artificial sequence <220> <223> Primer FSERVII <220> <221 > misc_feature <222> (54)..(95) <223> The nucleotides in positions 54-95 were synthesized as: 3442134 4234222331 1431233422 4111234422 13122, where 1: (97%A, 1%T, 1%C, 1%G); 2 : (97%T, 1%A, 1%C, 1%G); 3:(97%C, 1%A, 1%T, 1%G); and 4 : (97%G, 1%A, 1%T, 1%C). <400> 21 ttccatgctg catcgacaca gggaggcggc tatgatatga ggaaattgct gaannnnnnn 60 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnntgtcg ataacca 107

<210> 22 <211> 18 <212> DNA <213> Artificial sequence <220> <223> Primer RSERVII <400> 22 tgtcgatgca gcatggaa 18

<210> 23 <211> 80 <212> DNA <213> Artificial sequence <220> <223> Primer FSERIX <220> <221 > misc_feature <222> (21)..(62) <223> The nucleotides in positions 21-62 were synthesized as: 4322432213 4322221223 2313114441 1232441213 33, where 1: (97%A, 1%T, 1%C, 1 %G); 2:(97%T, 1%A, 1%C, 1%G); 3:(97%C, 1%A, 1%T, 1%G); and 4:(97%G, 1%A, 1%T, 1%C). <400> 23 gtccaaacat ggtttaagcc nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 60 nntcaggttt tctacgggga 80

<210> 24 <211> 20 <212> DNA <213> Artificial sequence <220> <223> Primer RSERIX <400> 24 ggcttaaacc atgtttggac 20

<210> 25 <211 > 0 <212> DNA <213> Artificial sequence <220> <223> There is no SEQ ID NO: 25 <400> 25 000

<210> 26 <211 > 24 <212> DNA <213> Artificial sequence <220> <223> Primer 1B <400> 26 cgattgctga cgctgttatt tgcg 24

<210> 27 <211> 25 <212> DNA <213> Artificial sequence <220> <223> Primer #63 <400> 27 ctatctttga acataaattg aaacc 25

<210> 28 <211> 20 <212> DNA <213> Artificial sequence <220> <223> Forward Primerl <400> 28 gacctgcagt caggcaacta 20

<210> 29 <211> 20 <212> DNA <213> Artificial sequence <220> <223> Reverse Primerl <400> 29 tagagtcgac ctgcaggcat 20

<210> 30 <211> 20 <212> DNA <213> Artificial sequence <220> <223> Forward Primer2 <400> 30 gacctgcagt caggcaacta 20

<210>31 <211> 20 <212> DNA <213> Artificial sequence <220> <223> Reverse Primer2 <400> 31 tagagtcgac ctgcaggcat 20

<210> 32 <211 >2084 <212> DNA <213> Bacillus amyloliquefaciens <220> <221 > misc_feature <222> (343)..(1794)

<223> CDS <400> 32 gccccgcaca tacgaaaaga ctggctgaaa acattgagcc tttgatgact gatgatttgg 60 ctgaagaagt ggatcgattg tttgagaaaa gaagaagacc ataaaaatac cttgtctgtc 120 atcagacagg gtatttttta tgctgtccag actgtccgct gtgtaaaaat aaggaataaa 180 ggggggttgt tattatttta ctgatatgta aaatataatt tgtataagaa aatgagaggg 240 agaggaaaca tgattcaaaa acgaaagcgg acagtttcgt tcagacttgt gcttatgtgc 300 acgctgttat ttgtcagttt gccgattaca aaaacatcag ccgtaaatgg cacgctgatg 360 cagtattttg aatggtatac gccgaacgac ggccagcatt ggaaacgatt gcagaatgat 420 gcggaacatt tatcggatat cggaat-cact gccgtctgga ttoctcccgc atacaaagga 480 ttgagccaat ccgataacgg atacggacct tatgatttgt atgatttagg agaattccag 540 caaaaaggga cggtcagaac gaaatacggc acaaaatcag agcttcaaga tgcgatcggc 600 tcactgcatt cccggaacgt ccaagtatac ggagatgtgg ttttgaatca taaggctggt 660 gctgatgcaa cagaagatgt aactgccgtc gaagtcaatc cggccaatag aaatcaggaa 720 acttcggagg aatatcaaat caaagcgtgg acggattttc gttttccggg ccgtggaaac 780 acgtacagtg attttaaatg gcattggtat catttcgacg gagcggactg ggatgaatcc 840 cggaagatca gccgcatctt taagtttcgt ggggaaggaa aagcgtggga ttgggaagta 900 tcaagtgaaa acggcaacta tgactattta atgtatgctg atgttgacta cgaccaccct 960 gatgtcgtgg cagagacaaa aaaatggggt atctggtatg cgaatgaact gtcattagac 1020 ggcttccgta ttgatgccgc caaacatatt aaattttcat ttctgcgtga ttgggttcag 1080 gcggtcagac aggcgacggg aaaagaaatg tttacggttg cggagtattg gcagaataat 1140 gccgggaaac tcgaaaacta cttgaataaa acaagcttta atcaatccgt gtttgatgtt 1200 ccgcttcatt tcaatttaca ggcggcttcc tcacaaggag gcggatatga tatgaggcgt 1260 ttgctggacg gtaccgttgt gtccaggcat ccggaaaagg cggttacatt tgttgaaaat 1320 catgacacac agccgggaca gtcattggaa tcgacagtcc aaacttggtt taaaccgctt 1380 gcatacgcct ttattttgac aagagaat-cc ggttatcctc aggtgttcta tggggatatg 1440 tacgggacaa aagggacatc gccaaaggaa attccctcac tgaaagataa tatagagccg 1500 attttaaaag cgcgtaagga gtacgcatac gggccccagc acgattatat tgaccacccg 1560 gatgtgatcg gatggacgag ggaaggtgac agctccgccg ccaaat-cagg tttggccgct 1620 ttaatcacgg acggacccgg cggatcaaag cggatgtatg ccggcctgaa aaatgccggc 1680 gagacatggt atgacataac gggcaaccgt tcagatactg taaaaatcgg atctgacggc 1740 tggggagagt ttcatgtaaa cgatgggtcc gtctccattt atgttcagaa ataaggtaat 1800 aaaaaaacac ctccaagctg agtgcgggta tcagcttgga ggtgcgttta ttttttcagc 1860 cgtatgacaa ggtcggcatc aggtgtgaca aatacggtat gctggctgtc ataggtgaca 1920 aatccgggtt ttgcgccgtt tggctttttc acatgtctga tttttgtata atcaacaggc 1980 acggagccgg aatctttcgc cttggaaaaa taagcggcga tcgtagctgc ttccaatatg 2040 gattgttcat cgggatcgct gcttttaatc acaacgtggg at-cc 2084

REFERENCES CITED IN THE DESCRIPTION

This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description • VV09Q11352A 100031 • WQ9510603.A .[00033. . WQ9S26397A F00031 f0027f [00301 [0030] Γ00301 [00301 Γ00341 • VV09623873A [0003] [0004] • WQ9741213A [00031 [00041 • WQ991S467A [0003] . WQ9623874A Γ0003] [00041 F00041 Γ01211 • US4335208Å [0010] • US4 560651A F00101 • EP0252686A [00281 • WQ9100353.A [0028] • WQ9418314A [00281 • US4683202A [0080] . US4760025A iOOSit • WQ9522625A [00981 • VV09e003-13A [00991 • WQ9117243A [01951 • EP238023A [0111] • WQ9707202A F01211 • DK9900628W [01021 • DK.PA199801495 [0162]

Non-patent literature cited in the description • TSUKAMOTO et al.Biochemical and Biophysical Research Communications, 1988, vol. 151,25-31 [0027] . GABORIAUD et al.FEBS LETTERS, 1987, vol. 224, 149-155 .[0033]. • HUBER, TTORDA, AEPROTEIN SCIENCE, 1998, vol. 7, 1142-149 TO0331 • HUDSON et al.Practical ImmunologyBlackwell Scientific Publicationsl 9890000 [00361 [31611 • SAM BROOK et al.Molecular Cloning: A Laboratory ManualCold Spring Harborl 9890000 [0038] [0107] [01S1] • JIE LIANGHERBERT EDELSBRUNNERCLARE WOODWARDAnatomy of protein Pockets and Cavities: Measurements of binding site geometry and implications for ligand designProtein Science, 1998, vol. 7, 1884-1897 £00651 • W. KABSCHC. SANDERBiopolymers, 1983, vol. 22, 2577-2637 [0067] • G. VRIENDWhatif and drug design programJ. Mol. Graph., 1990, vol. 8, 52-56 [00671 • LEUNG et al.Technique, 1989, vol. 1, 11-15 [0091] • FOWLER et al.Molec. Gen. Genet., 1974, vol. 133, 179-191 [0092] . HORTON et al.Gene, 1989, vol. 77, 61-68 [0153] • KLEIN, C. et al.Biochemistry, 1992, vol. 31.8740-8746 [0161] . MIZUNO, H. etal.J. Mol. Biol., 1993, vol. 234, 1282-1283 [01611 • CHANG, C. et al.J. Mol. Biol., 1993, vol. 229, 235-238 [0161] . LARSON, S.B.J. Mol. Biol., 1994, vol. 235, 1560-1584 [01611 . LAWSON, C.L.J. Mol. Biol., 1994, vol. 236, 590-600 [0161] . QIAN, M. et al.J. Mol. Biol., 1993. vol. 231.785-799 [0161] • BRADY, R.L et al.Acta Crystallogr. sect. B, vol. 47, 527-535 [0161] • SWIFT, H.J. et al.Acta Crystallogr. sect. B, vol. 47, 535-544 .[0161] • A KADZIOLAPh.D. Thesis: "An alpha-amylase from Barley and its Complex with a Substrate Analogue Inhibitor Studied by X-ray Crystallography, 1993, [01611 • MACGREGOR, E. A Food Hydrocolloids, 1987, vol. 1.5-6 [0161] • B. DIDERICHSENL. CHRISTIANSENCIoning of a maltogenic a-amylase from Bacillus stearothermophilusFEMS Microbiol, letters, 1988, vol. 56, 53-60 £0161.1 • S.L. BEAUCAGEM.H. CARUTHERSTetrahedron Letters, 1981, vol. 22, 1859-1869 [0161] . MATTHES et al.The EMBO J„ 1984, vol. 3, 801-805 [01611 • R.K. SAIKI et al.Science, 1988, vol. 239, 487-491 [0161] . MORINAGAet al.Biotechnology, 1984, vol. 2, 646-639 [01611 . NELSONLONGAnalytical Biochemistry, 1989, vol. 180, 147-151 [0161] . HUNKAPILLER et al.Nature, 1984, vol. 310, 105-111 [0181] • R. HIGUCHIB. KRUMMELR.K. SAIKIA general method of in vitro preparation and specific mutagenesis of DNAfragments: study of protein and DNA interactionsNucl. Acids Res., 1988, vol. 16, 7351-7367 [0161]. . DUBNAU et al.J. Mol. Biol., 1971, vol. 56, 209-221 [01611 • GRYCZAN et al.J. Bacteriol., 1978, vol. 134, 318-329 [0161] . S.D. ERLICHProc. Natl. Acad. Sci., 1977, vol. 74, 1680-1682 [0161] • BOEL et al.Biochemistry, 1990, vol. 29, 6244-6249 [01611

Claims (14)

1. Variant af en forælder Termamyl-lignende alpha-amylase, hvor a) varianten omfatter én eller flere af følgende substitutioner: E376K; S417T; A420Q eller R; S356A; eller Y358F og yderligere K176R+I205N under anvendelse af nummereringen i SEQ ID NO: 4, hvor den forælder Termamyl-lignende alpha-amylase udviser mindst 80% identitet med SEQ ID NO: 4, og b) varianten har en alpha-amylase aktivitet og endvidere har varianterne en forøget stabilitet ved pH 7.0 og/eller calciumkoncentrationer under 1mM ved temperaturer i området fra 95° C to 160° C i forhold til den forælder Termamyl-lignende alpha-amylase.A variant of a parent Termamyl-like alpha-amylase, wherein a) the variant comprises one or more of the following substitutions: E376K; S417T; A420Q or R; S356A; or Y358F and additional K176R + I205N using the numbering in SEQ ID NO: 4, wherein the parent Termamyl-like alpha-amylase exhibits at least 80% identity to SEQ ID NO: 4, and b) the variant has an alpha-amylase activity and further, the variants have increased stability at pH 7.0 and / or calcium concentrations below 1 mM at temperatures ranging from 95 ° C to 160 ° C relative to the parent Thermamyl-like alpha-amylase. 2. Variant ifølge krav 1, hvor forælder a-amylasen omfatter en aminosyre-sekvens med mindst 85%, fortrinsvist mindst 90%, mere fortrinsvist 95%, endnu mere fortrinsvist 97%, og endnu mere fortrinsvist mindst 99% identitet med SEQ ID NO: 4.The variant of claim 1, wherein the parent α-amylase comprises an amino acid sequence of at least 85%, preferably at least 90%, more preferably 95%, even more preferably 97%, and even more preferably at least 99% identity with SEQ ID NO. : 4. 3. DNA konstrukt, der omfatter en DNA-sekvens, som koder en α-amylase-vahant ifølge krav 1 eller 2.A DNA construct comprising a DNA sequence encoding an α-amylase pathway according to claim 1 or 2. 4. Rekombinant ekspressionsvektor, som bærer en DNA konstrukt ifølge krav 3.The recombinant expression vector carrying a DNA construct according to claim 3. 5. Celle, som er transformeret med en DNA konstrukt ifølge krav 3 eller en vektor ifølge krav 4.A cell transformed with a DNA construct according to claim 3 or a vector according to claim 4. 6. Celle ifølge krav 5, hvilken celle er en mikroorganisme, især en bakterie eller en fungus.The cell of claim 5, which cell is a microorganism, especially a bacterium or a fungus. 7. Celle ifølge krav 6, hvilken celle er en grampositiv bakterie, såsom Bacillus subtilis, Bacillus licheniformis, Bacillus lentus, Bacillus brevis, Bacillus stearothermophilus, Bacillus alkalophilus, Bacillus amyloliquefaciens, Bacillus coagulans, Bacillus circulans, Bacillus lautus eller Bacillus thuringiensis.The cell of claim 6, which is a gram-positive bacterium such as Bacillus subtilis, Bacillus licheniformis, Bacillus lentus, Bacillus brevis, Bacillus stearothermophilus, Bacillus alkalophilus, Bacillus amyloliquefaciens, Bacillus coagulans, Bacillus lautus, Bacillus lautus 8. Vaskemiddel-sammensætning, der omfatter en alpha-amylase-variant ifølge krav leiler 2.A detergent composition comprising an alpha-amylase variant according to claim 2. 9. Vaskemiddel-sammensætning ifølge krav 8, hvilken vaskemiddel-sammensætning yderligere omfatter et andet enzym, såsom en protease, en lipase, en peroxidase, et andet amylolytisk enzym og/eller en cellulase.The detergent composition of claim 8, further comprising a second enzyme such as a protease, a lipase, a peroxidase, a second amylolytic enzyme and / or a cellulase. 10. Manuel eller automatisk opvaskemiddel-sammensætning, der omfatter en alpha-amylase-variant ifølge krav 1 eller 2.A manual or automatic detergent composition comprising an alpha-amylase variant according to claim 1 or 2. 11. Opvaskemiddel-sammensætning ifølge krav 10, hvilken opvaskemiddelsammensætning yderligere omfatter et andet enzym, såsom en protease, en lipase, en peroxidase, et andet amylolytisk enzym og/eller en cellulase.A detergent composition according to claim 10, further comprising a second enzyme such as a protease, a lipase, a peroxidase, another amylolytic enzyme and / or a cellulase. 12. Manuel eller automatisk vasketøjsvaskemiddel-sammensætning, der omfatter en a-amylase-variant ifølge krav 1 eller 2.A manual or automatic laundry detergent composition comprising an α-amylase variant according to claim 1 or 2. 13. Vasketøjsvaskemiddel-sammensætning ifølge krav 12, hvilken vasketøjsvaskemiddelsammensætning yderligere omfatter et andet enzym, såsom en protease, en lipase, en peroxidase, et amylolytisk enzym og/eller en cellulase.A laundry detergent composition according to claim 12, further comprising a second enzyme such as a protease, a lipase, a peroxidase, an amylolytic enzyme and / or a cellulase. 14. Anvendelse af en alpha-amylase-variant ifølge krav 1 eller 2 til vask og/eller opvask eller til tekstilafsletning eller til stivelse-forflydning.Use of an alpha-amylase variant according to claim 1 or 2 for washing and / or washing or for textile removal or for starch liquefaction.