FIELD: biotechnology.
SUBSTANCE: invention is a polypeptide involved in the production of L-leucine, in which the amino acid valine (V) is at position 156 from the N-terminus of the amino acid sequence of SEQ ID NO: 1 is replaced by another amino acid. The invention also relates to a polypeptide involved in the production of L-leucine, in which the amino acid valine (V) at position 156 from the N-terminus of the amino acid sequence having 90% or greater homology or identity with the amino acid sequence of SEQ ID NO: 1 is replaced by another amino acid. The invention also relates to a method of producing leucine, which includes cultivating a microorganism transformed with a vector containing a polypeptide according to the invention.
EFFECT: obtaining L-lysine with a high degree of efficiency.
11 cl, 3 tbl, 3 ex
