FIELD: medicine.
SUBSTANCE: invention relates to field of biotechnology. Claimed is method of obtaining 4-hydroxy-L-leucine or its salt by method of enzymatic conversion of L-leucine or its salt in presence of bacterial deoxygenase, selected from group, which consists of dioxygenases with amino acid sequence SEQ ID NO: 6, SEQ ID NO: 8, SEQ ID NO: 22, SEQ ID NO: 54, SEQ ID NO: 62 or their versions. Described is method of obtaining 4-hydroxy-L-leucine or its salt in L-leucine-containing medium in presence of first bacterium, transformed with DNA molecule, encoding dioxygenase, which consists of dioxygenases with amino acid sequence SEQ ID NO: 6, SEQ ID NO: 8, SEQ ID NO: 22, SEQ ID NO: 54, SEQ ID NO: 62 or their versions. Described is bacterium - producent of 4-hydroxy-L-leucine or its salt, transformed with DNA molecule, encoding bacterial dioxygenase, selected from group, consisting of dioxygenases with amino acid sequence SEQ ID NO: 6, SEQ ID NO: 8, SEQ ID NO: 22, SEQ ID NO: 54, SEQ ID NO: 62 or their versions in medium, containing L-leucine or its salt.
EFFECT: invention makes it possible to obtain 4-hydroxy-L-leucine or its salt with high degree of efficiency.
9 cl, 24 dwg, 5 tbl, 11 ex
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