CN107384903B - 一种海藻糖合酶突变体及其在制备海藻糖中的应用 - Google Patents
一种海藻糖合酶突变体及其在制备海藻糖中的应用 Download PDFInfo
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- CN107384903B CN107384903B CN201710776847.2A CN201710776847A CN107384903B CN 107384903 B CN107384903 B CN 107384903B CN 201710776847 A CN201710776847 A CN 201710776847A CN 107384903 B CN107384903 B CN 107384903B
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/90—Isomerases (5.)
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/10—Transferases (2.)
- C12N9/1048—Glycosyltransferases (2.4)
- C12N9/1051—Hexosyltransferases (2.4.1)
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/70—Vectors or expression systems specially adapted for E. coli
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- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/12—Disaccharides
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y204/00—Glycosyltransferases (2.4)
- C12Y204/01—Hexosyltransferases (2.4.1)
- C12Y204/01245—Alpha,alpha-trehalose synthase (2.4.1.245)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y504/00—Intramolecular transferases (5.4)
- C12Y504/99—Intramolecular transferases (5.4) transferring other groups (5.4.99)
- C12Y504/99016—Maltose alpha-D-glucosyltransferase (5.4.99.16)
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- Genetics & Genomics (AREA)
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- General Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
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- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Plant Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Enzymes And Modification Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
酶 | 转化率(%) |
野生酶 | 62.2% |
E289G | 69.7% |
H295N | 70.5% |
M344K | 70.3% |
M367L | 69.6% |
H295N/E289G | 70.4% |
H295N/M344K | 70.9% |
H295N/M367L | 71.3% |
H295N/M344K/M367L | 73.7% |
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