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1. US20220204948 - MACHINE LEARNING GENE MINING METHOD AND PHOSPHINOTHRICIN DEHYDROGENASE MUTANT FOR AMINO TRANSLOCATION

Office
United States of America
Application Number 17505945
Application Date 20.10.2021
Publication Number 20220204948
Publication Date 30.06.2022
Publication Kind A1
IPC
C12N 9/06
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9Enzymes, e.g. ligases (6.); Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating, or purifying enzymes
02Oxidoreductases (1.), e.g. luciferase
06acting on nitrogen containing compounds as donors (1.4, 1.5, 1.7)
C12P 13/04
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
13Preparation of nitrogen-containing organic compounds
04Alpha- or beta-amino acids
C12N 9/04
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9Enzymes, e.g. ligases (6.); Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating, or purifying enzymes
02Oxidoreductases (1.), e.g. luciferase
04acting on CHOH groups as donors, e.g. glucose oxidase, lactate dehydrogenase (1.1)
G16B 30/10
GPHYSICS
16INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
BBIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
30ICT specially adapted for sequence analysis involving nucleotides or amino acids
10Sequence alignment; Homology search
CPC
G16B 30/10
GPHYSICS
16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
BBIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
30ICT specially adapted for sequence analysis involving nucleotides or amino acids
10Sequence alignment; Homology search
C12N 9/0016
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9Enzymes; Proenzymes; Compositions thereof
0004Oxidoreductases (1.)
0012acting on nitrogen containing compounds as donors (1.4, 1.5, 1.6, 1.7)
0014acting on the CH-NH2 group of donors (1.4)
0016with NAD or NADP as acceptor (1.4.1)
C12N 9/0006
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9Enzymes; Proenzymes; Compositions thereof
0004Oxidoreductases (1.)
0006acting on CH-OH groups as donors (1.1)
C12P 13/04
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
13Preparation of nitrogen-containing organic compounds
04Alpha- or beta- amino acids
Applicants ZHEJIANG UNIVERSITY OF TECHNOLOGY

Inventors YAPING XUE
FENG CHENG
DONGYANG WU
SHUPING ZOU
JIANMIAO XU
YUGUO ZHENG
Title
(EN) MACHINE LEARNING GENE MINING METHOD AND PHOSPHINOTHRICIN DEHYDROGENASE MUTANT FOR AMINO TRANSLOCATION
Abstract
(EN)

Disclosed are a machine learning gene mining method and a phosphinothricin dehydrogenase mutant for amino translocation. The phosphinothricin dehydrogenase mutant for amino translocation is obtained by mutation of a wild-type phosphinothricin dehydrogenase with an amino acid sequence as shown in SEQ ID No.2 at one of the following sites: (1) E263D-K134R-H96A-R290V; (2) E263D-K134R-H96A; (3) E263D-K134R; (4) E263D; (5) E263N; (6) E263C; and (7) E263G. The present invention utilizes the site-saturation mutagenesis technology to mutate a phosphinothricin dehydrogenase gene as shown in SEQ ID No. 1, finds that the 263rd, 134th, 290th and 290th positions are the key sites affecting enzyme activity and stereoselectivity, and obtains a mutant with enzyme activity and ee value much higher than those of the parent phosphinothricin dehydrogenase.


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