METHOD FOR PREPARING L-THREONINE USING MICROORGANISM BELONGING TO GENUS ESCHERICHIA WHEREIN OPERON phoBR IS INACTIVATED

摘要

FIELD: biotechnology, microbiology, amino acids. ^ SUBSTANCE: invention relates to a method for preparing L-threonine using microorganism belonging to genus Escherichia that is modified and wherein operon phoBR is inactivated. Invention provides preparing L-threonine with high degree of effectiveness. ^ EFFECT: improved preparing method. ^ 3 cl, 2 tbl, 2 dwg, 11 ex