FIELD: biotechnology, microbiology, amino acids.
SUBSTANCE: invention represents a method for preparing L-threonine. Method involves culturing a modified microorganism belonging to Escherichia genus wherein hipA gene is inactivated, and isolation of L-threonine from cultural fluid. Invention provides preparing L-threonine with the high degree of effectiveness.
EFFECT: improved preparing method of amino acid.
3 cl, 2 tbl, 3 dwg, 13 ex
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