[EN] ENGINEERED POLYPEPTIDES AND THEIR APPLICATIONS IN SYNTHESIS OF BETA-HYDROXY-ALPHA-AMINO ACIDS<br/>[FR] POLYPEPTIDES MODIFIÉS ET LEURS APPLICATIONS DANS LA SYNTHÈSE D'ACIDES BÊTA-HYDROXY-ALPHA-AMINÉS
申请人:ENZYMASTER NINGBO BIO ENG CO LTD
公开号:WO2018219107A1
公开(公告)日:2018-12-06
Provided are engineered polypeptides that are useful for the asymmetric synthesis of β-hydroxy-α-amino acids under industrial-relevant conditions. The engineered polypeptides disclosed are developed through directed evolution based on the ability of catalytic synthesis of (2S, 3R) -2-amino-3-hydroxy-3- (4-nitrophenyl) propanoic acid. Also provided are polynucleotides encoding the engineered polypeptides, host cells capable of expressing engineered polypeptides, and methods of producing β-hydroxy-α-amino acids using engineered polypeptides. Compared to other processes of preparation, the use of the engineered polypeptides for the preparation of β-hydroxy-α-amino acids results in high purity of the desired stereoisomers, mild reaction conditions, low pollution and low energy consumption. It has good industrial application prospects.
提供了经过工程改造的多肽,可用于在工业相关条件下不对称合成β-羟基-α-氨基酸。所述经过改造的多肽是通过基于催化合成(2S,3R)-2-氨基-3-羟基-3-(4-硝基苯基)丙酸的能力进行定向进化而开发的。还提供了编码经过改造的多肽的多核苷酸、能够表达经过改造的多肽的宿主细胞,以及使用经过改造的多肽生产β-羟基-α-氨基酸的方法。与其他制备过程相比,使用经过改造的多肽制备β-羟基-α-氨基酸可得到所需立体异构体的高纯度,反应条件温和,污染和能耗低。具有良好的工业应用前景。