Ajinomoto Co., Ltd.

Irina Lyvovna Tokhmakova

Natalia Pavlovna Zakataeva

Vladimir Veniaminovich Aleshin

Kazuo Nakanishi

Vitaliy Arkadievich Livshits

Petr Vladimirovich Troshin

Alla Valentinovna Belareva

Vitaliy Arkadyevich Livshits

Kazuo c/o Ajinomoto Co Inc Nakanishi

The present invention describes a bacterium which has an ability to produce an amino acid and in which the rhtC gene encoding a protein having an enhanced activity of imparting L-threonine resistance to a bacterium expressing the protein. Preferably, the bacterium further includes an rhtB gene encoding for a protein having an enhanced activity of imparting to a bacterium L-homoserine resistance expressing the protein. The present invention also describes a method of cultivating the bacterium in a culture medium to produce and accumulate amino acids in the medium, and the amino acid is recovered from the medium.

Method for producing an amino acid using a bacterium overexpressing an rhtC gene

A bacterium belonging to the genuswhich has an ability to produce an L-amino acid, wherein the ability to produce the L-amino acid is increased by increasing expression of the yfiK gene is described. A method for producing the L-amino acid using the bacterium is also described.

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A bacterium belonging to the genuswhich has an ability to produce an L-amino acid, wherein the ability to produce the L-amino acid is increased by increasing expression of the yggA gene is described. A method for producing the L-amino acid using the bacterium is also described.

A bacterium belonging to the genuswhich has an ability to produce an L-amino acid, wherein the ability to produce the L-amino acid is increased by increasing expression of an L-amino acid excretion protein is described. A method for producing the L-amino acid using the bacterium is also described.

A bacterium belonging to the genusand having an ability to produce an L-amino acid, wherein the ability to produce the L-amino acid is increased by increasing an expression amount of an L-amino acid excretion protein, and a method for producing the L-amino acid using the bacterium.

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Moscow, Russia

Irina Lyvovna Tokhmakova