L-THREONINE PRODUCING MICROORGANISM AND METHOD FOR PRODUCING L-THREONINE USING THE SAME MICROORGANISM

摘要

PURPOSE: Provided are an L-threonine producing microorganism and a method for producing L-threonine using the same, thereby producing L-threonine, which can be used for animal feeds, food additives and medicines, in high yield. CONSTITUTION: The L-threonine producing microorganism, E.coli ABA/fus-pykF 16(KCCM-10269), is originated from E.coli pGMTN-PPC 12(KCCM-10236) which contains two of phosphoenol pyruvate carboxylase(ppc) coding genes and two of operons, and inhibits expression of pykA or pykF gene which encodes pyruvate carboxylase isozyme. L-threonine is manufactured by culturing E.coli ABA/fus-pykF 16(KCCM-10269) in a growth medium at 32 deg.C with stirring under aeration.