METHOD FOR PREPARING L-AMINO ACIDS, STRAIN ESCHERICHIA COLI AS PRODUCER OF L-AMINO ACID (VARIANTS) Russian patent published in 2003 - IPC

Abstract RU 2215785 C2

FIELD: biotechnology, microbiology, amino acids. SUBSTANCE: L-amino acids of L- glutamic acid family are prepared by culturing Escherichia coli in nutrient medium. After accumulation L- amino acids are isolated from cultural fluid. The strain with enhanced capacity to produce L-amino acids of L- glutamic acid family that is caused by enhancement activity of protein encoded by gene b3434 is used as the strain-producer. The strain Escherichia coli 328 (pYHGN) is used as producer of L-arginine and the strain Escherichia coli 702ilvA (pYHGN) as producer of L-proline. Invention provides preparing L-amino acids with high degree of effectiveness. EFFECT: improved preparing method. 9 cl, 4 tbl, 1 dwg, 4 ex

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RU 2 215 785 C2

Authors

Tabolina E.A.

Rybak K.V.

Khurges E.M.

Dates

2003-11-10—Published

2001-06-28—Filed