PROCESS FOR PREPARING L-TRIPTOPHAN BY MICROORGANISM

摘要

Prep. of L-tryptophan by cultrue of a mutant, Escherichia coli MW150 (KAIST, KCTC 83773P) (I) without tryptophanase activity, having a resistance against a high concentration of Ltryptophan analogue and L-valine. The growth of (I) being promoted in the presence of L- phenylalanine and L-tyrosine. L-tryptophan is purified from the culture broth.