METHOD OF PRODUCTION FOR THREONINE AND ISOLEUCINE

PROBLEM TO BE SOLVED: To improve the L-threonine or L-isoleucine productive ability of a bacterium belonging to the genus Escherichia. SOLUTION: Threonine or isoleucine is produced by culturing the bacterium belonging to the genus Escherichia which features having L-threonine or L- isoleucine produc...

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Hauptverfasser:	KURAHASHI OSAMU, MIYATA YURI, NAKAI YUUTAI, NAKANISHI KAZUO, ITO HISAO, KOJIMA HIROYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF CULTURE MEDIA ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE METALLURGY MICROBIOLOGY MICROORGANISMS OR ENZYMES MUTATION OR GENETIC ENGINEERING PROCESSES USING MICROORGANISMS PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS SPIRITS VINEGAR WINE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve the L-threonine or L-isoleucine productive ability of a bacterium belonging to the genus Escherichia. SOLUTION: Threonine or isoleucine is produced by culturing the bacterium belonging to the genus Escherichia which features having L-threonine or L- isoleucine productive ability and showing increased intracellular phosphoenol pyruvic acid carboxylase activity and transhydrogenase activity in a culture medium to make the bacterium form and accumulate threonine or isoleucine in the culture medium and by collecting threonine or isoleucine from the culture medium.