申请人:East China University of Science and Technology
公开号:US10294479B2
公开(公告)日:2019-05-21
Disclosed herein is Candida parapsilosis CGMCC 9630, the carbonyl reductase expressed by said strain and the encoding gene and amino acid sequence thereof, the recombinant expression vector and recombinant expression transformant containing said gene sequence, and use of whole cells of Candida parapsilosis, carbonyl reductase or corresponding recombinant transformant thereof as catalyst in catalyzing asymmetric reduction of prochiral carbonyl compounds, particularly reduction of 6-carbonyl-8-halogenocaprylate to prepare the synthetic precursor of (R)-α-lipoic acid, (R)-6-hydroxy-8-halogenocaprylate. In comparison to other methods of asymmetric reduction for preparing (R)-6-hydroxy-8-halogenocaprylate, the disclosure has advantages of high substrate concentration, mild reaction conditions, environmental friendship, high yield, and high optical purity of the product, and thus has good prospect in industrial production of (R)-α-α-lipoic acid.
本文公开了副丝状念珠菌 CGMCC 9630、由所述菌株表达的羰基还原酶及其编码基因和氨基酸序列、重组表达载体和含有所述基因序列的重组表达转化子,以及使用副丝状念珠菌的全细胞、羰基还原酶或其相应的重组转化子作为催化剂,催化手性羰基化合物的不对称还原,特别是还原 6-羰基-8-卤代辛酸酯以制备(R)-α-硫辛酸的合成前体(R)-6-羟基-8-卤代辛酸酯。与其他不对称还原法制备(R)-6-羟基-8-卤代辛酸相比,本发明具有底物浓度高、反应条件温和、环境友好、产率高、产物光学纯度高等优点,因此在(R)-α-α-硫辛酸的工业化生产中具有良好的应用前景。