Disclosed are a novel hydantoin racemase and a process for producing an optically active N-carbamylamino acid or an optically active amino acid using the hydantoin racemase. A novel hydantoin racemase isolated and purified from Bacillus sp. Strain KNK519HR; a gene encoding the hydantoin racemase; a recombinant plasmid having the gene introduced therein; a transformant having the hydantoin racemase gene introduced therein; and a process for producing an optically active N-carbamylamino acid or an optically active amino acid characterized in that a 5-substituted hydantoin compound is treated in the presence of hydantoinase and N-carbamylamino acid amidohydolase as well as the hydantoin racemase.
本发明公开了一种新型海因消旋酶和一种利用该海因消旋酶生产光学活性 N-
氨基甲酰
氨基酸或光学活性
氨基酸的工艺。从 Bacillus sp.菌株KNK519HR中分离和纯化的一种新型海因消旋酶;一种编码该海因消旋酶的
基因;一种含有该
基因的
重组质粒;一种含有该海因消旋酶
基因的转化体;以及一种生产光学活性N-
氨基甲酰
氨基酸或光学活性
氨基酸的工艺,其特征在于5-取代的海因化合物是在海因酶和N-
氨基甲酰
氨基酸酰胺醇化酶以及海因消旋酶的存在下处理的。