The present invention relates to a whole cell catalytic system for the preparation of an enantiomerically enriched a-amino acid from a corresponding hydantoin wherein hydantoinase, L-carbamoylase and hydantoin racemase are coexpressed in a recombinant micro-organism wherein the genes coding for these three enzymes are located on a single replicon.
The present invention further relates to the use of such a whole cell catalytic system according in the preparation of an enantiomerically enriched L-α-amino acid from a corresponding hydantoin.
本发明涉及一种从相应的海因制备对映体富集的 a-
氨基酸的全细胞催化系统,其中海因酶、L-
氨基甲酰酶和海因消旋酶在
重组微
生物中共同表达,编码这三种酶的
基因位于单个复制子上。
本发明还涉及利用这种全细胞催化系统从相应的海因中制备对映体富集的 L-
α-氨基酸。