FIELD: biotechnology, amino acids, microbiology.
SUBSTANCE: invention represents a method for preparing amino acid L-threonine by using bacterium belonging to Escherichia genus. This bacterium shows ability for production of L-threonine and modified by so manner that expression of gene chosen from the group glk, pgi, pfkA, tpiA, gapA, pgk, eno and pykA encoding glycogenolysis enzyme is enhanced. The claimed invention provides preparing L-threonine with the high degree of effectiveness.
EFFECT: improved preparing method.
7 cl, 1 dwg, 12 tbl, 9 ex
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