US7435560 Method for producing purine nucleoside by fermentation

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United States of America

Application Number 09462472

Application Date 14.01.2000

Publication Number 7435560

Publication Date 14.10.2008

Grant Number 7435560

Grant Date 14.10.2008

Publication Kind B1

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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 9194603 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.

C	CHEMISTRY; METALLURGY
12	BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
P	FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
19	Preparation of compounds containing saccharide radicals

C	CHEMISTRY; METALLURGY
12	BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
P	FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
19	Preparation of compounds containing saccharide radicals
26	Preparation of nitrogen-containing carbohydrates
28	N-glycosides
38	Nucleosides

C	CHEMISTRY; METALLURGY
12	BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
N	MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
1	Microorganisms, 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

C	CHEMISTRY; METALLURGY
12	BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
N	MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
1	Microorganisms, 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
20	Bacteria; Culture media therefor

C	CHEMISTRY; METALLURGY
12	BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
N	MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
1	Microorganisms, 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
20	Bacteria; Culture media therefor
21	modified by introduction of foreign genetic material

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1. US7435560 - Method for producing purine nucleoside by fermentation

C	CHEMISTRY; METALLURGY
12	BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
R	PROCESSES USING MICROORGANISMS
1	Processes using microorganisms
01	using bacteria or actinomycetales
185	Escherichia
19	Escherichia coli