FIELD: microbiology, amino acids production. SUBSTANCE: method involves insertion of Ser A-allele in microorganism strain. This allele shows resistance to regulation by feed-back inhibition type, its value $$$ for serine is between 0.1 mM and 50 mM. Obtained microorganism is used as a producer of tryptophan. Invention ensures to obtain microorganisms showing the increased degree of tryptophan production. EFFECT: improved method of microorganism preparing. 2 cl, 3 tbl, 19 dwg
Authors
Dates
1998-05-20—Published
1993-09-23—Filed