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1. US20070161090 - METHOD FOR PRODUCING PURINE NUCLEOSIDE BY FERMENTATION

Office
United States of America
Application Number 11682103
Application Date 05.03.2007
Publication Number 20070161090
Publication Date 12.07.2007
Publication Kind A1
IPC
C12P 19/00
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
19Preparation of compounds containing saccharide radicals
C12P 19/28
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
19Preparation of compounds containing saccharide radicals
26Preparation of nitrogen-containing carbohydrates
28N-glycosides
C12N 1/21
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
1Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
20Bacteria; Culture media therefor
21modified by introduction of foreign genetic material
C12P 19/40
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
19Preparation of compounds containing saccharide radicals
26Preparation of nitrogen-containing carbohydrates
28N-glycosides
38Nucleosides
40having a condensed ring system containing a six-membered ring having two nitrogen atoms in the same ring, e.g. purine nucleosides
Applicants AJINOMOTO CO., INC
Inventors MATSUI Hiroshi
Kawasaki Hisashi
Shimaoka Megumi
Takenaka Yasuhiro
Kurahashi Osamu
Agents OBLON, SPIVAK, MCCLELLAND, MAIER & NEUSTADT, P.C.
Priority Data 09194603 18.07.1997 JP
Title
(EN) METHOD FOR PRODUCING PURINE NUCLEOSIDE BY FERMENTATION
Abstract
(EN)

A microorganism which has a gene encoding an enzyme in which feedback inhibition is desensitized by substitution of one or two amino acids in PRPP amidotransferase encoded by purF of Escherichia coli, a gene encoding a protein which is an inactivated repressor of purine nucleotide biosynthesis encoded by purR, a gene encoding an enzyme which is inactivated purine nucleoside phosphorylase encoded by deoD, a gene encoding an enzyme which is inactivated succinyl-AMP synthase encoded by purA, a gene encoding an enzyme which is inactivated 6-phosphogluconate dehydrase encoded by edd, a gene encoding an enzyme which is inactivated phosphoglucose isomerase encoded by pgi and like is bred and a purine nucleoside is produced by culturing the microorganism.