FIELD: biotechnology.
SUBSTANCE: polypeptide involved in the production of L-valine is proposed, it consists of the amino acid sequence represented by SEQ ID NO: 1 in which glycine being the amino acid corresponding to position 134 of SEQ ID NO: 3 is replaced by serine. Also the following are proposed: a polynucleotide encoding the said polypeptide, a microorganism Corynebacterium glutamicum producing L-valine and containing the said polypeptide or polynucleotide encoding the said polypeptide, and a method for producing of L-valine.
EFFECT: increasing the yield of L-valine.
5 cl, 3 tbl, 2 ex
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