申请人:Ajinomoto Co., Inc.
公开号:EP2471942A1
公开(公告)日:2012-07-04
A method for producing an L-amino acid which comprisese culturing a bacterium belonging to the family Enterobacteriaceae and having an L-amino acid producing ability in a medium to produce and accumulate an L-amino acid in the medium and collecting the L-amino acid from the medium, wherein the bacterium has been modified so that activity or activities of one or two or more kinds of enzymes of the arginine succinyltransferase pathway, such as arginine succinyltransferase, succinylarginine dihydrolase, succinylornithine aminotransferase, succinylglutamate-semialdehyde dehydrogenase and succinylglutamate desuccinylase, is/are decreased.
一种生产 L-氨基酸的方法,包括在培养基中培养属于肠杆菌科并具有 L-氨基酸生产 能力的细菌,使其在培养基中生产和积累 L-氨基酸,并从培养基中收集 L-氨基酸、其中该细菌已被改造,使精氨酸琥珀酰基转移酶途径中的一种或两种或多种酶,如精氨酸琥珀酰基转移酶、琥珀酰精氨酸二醇酶、琥珀酰鸟氨酸氨基转移酶、琥珀酰谷氨酸-半醛脱氢酶和琥珀酰谷氨酸脱琥珀酰基酶的活性降低。