BACTERIUM BELONGING TO GENUS ESCHERICHIA AS PRODUCER OF L-ARGININE AND METHOD FOR PREPARING L-ARGININE

摘要

FIELD: biotechnology, microbiology, amino acids. ^ SUBSTANCE: invention relates to a method for preparing L-amino acids, for example, L-arginine by culturing of microorganism as a producer of L-arginine belonging to genus Escherichia. Indicated microorganism is modified and it comprises inactivated operon nir. Then accumulated L-arginine is isolated from the cultural fluid. The claimed invention provides preparing L-arginine with the high degree of effectiveness. ^ EFFECT: improved preparing method. ^ 4 cl, 1 tbl, 2 ex