FIELD: biotechnology, microbiology, amino acids.
SUBSTANCE: invention represents a method for preparing L-threonine using a microorganism belonging to genus Escherichia that is modified and comprising the inactivated mazEF operon. Invention provides preparing L-threonine with the high degree of effectiveness.
EFFECT: improved preparing method of L-threonine.
3 cl, 2 dwg, 2 tbl, 11 ex
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