Ajinomoto Co., Ltd.

Yuri Nagai

Yoshihiro Usuda

Takuji Ueda

Mikhail Markovich Gusyatiner

Kazuhiko Matsui

Elvira Borisovna Voroshilova

Tatyana Viktorovna Leonova

Mika Moriya

Yoko Asakura

Dmitriy Vladimirovich Filippov

Kazuyuki Hayashi

Yusuke Hagiwara

Keiko Noguchi

Yuri Masumitsu

Yuki Yano

Yuichi Nakahara

The present invention provides a method for producing L-amino acids, such as L-arginine, L-citrulline, and L-lysine, using a bacterium of the Enterobacteriaceae family, particularly a bacterium belonging to the genusor, which has been modified to attenuate expression of one or more genes, such as the pepA, pepB, and pepD genes.

Method for producing an L-amino acid using a bacterium of the enterobacteriaceae family, having attenuated expression of gene(s) encoding peptidase

An L-amino acid is produced by culturing a microorganism belonging to the family Enterobacteriaceae having an L-amino acid-producing ability and modified so that glycerol dehydrogenase and dihydroxyacetone kinase activities are increased, in a medium containing glycerol as a carbon source to produce and accumulate an L-amino acid in the medium or cells, and collecting the L-amino acid from the medium or the cells.

Method of producing L-amino acid

An L-amino acid is produced by culturing a microorganism which belongs to the family Enterobacteriaceae and is able to produce an L-amino acid, wherein the bacterium has been modified to enhance orotate phosphoribosyltransferase activity is enhanced, in a medium to produce and cause accumulation of an L-amino acid in the medium or cells, and collecting the L-amino acid from the medium or the cells.

L-amino acid-producing microorganism and a method for producing an L-amino acid

An L-amino acid is produced by culturing a bacterium belonging to the family Enterobacteriaceae, which is able to produce the L-amino acid, and is modified so that the activity of ribonuclease G is decreased in a medium containing glycerol as the carbon source, and collecting the L-amino acid from the culture.

Method for producing an L-amino acid

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Kawasaki, Japan

Yuri Nagai