申请人:University College Cork-National University of
Ireland, Cork
公开号:EP3604507A1
公开(公告)日:2020-02-05
An isolated ω-transaminase enzyme comprising an amino acid sequence of SEQUENCE ID NO: 1, or encoded by a nucleic acid sequence of SEQUENCE ID NO: 2, is provided and is derived from the marine sponge Pseudovibrio sp. Also provided are functional variants of the ω-transaminase enzyme that are isolated, have at least 70% sequence identity with SEQUENC ID NO: 1, and are capable of enantioselectively resolving a racemic amine by transformation to a ketone by oxidative deamination, or enantioselectively resolving a racemic ketone by transformation to an amine by reductive amination, in which the amine and ketone typically contain a stereocentre removed from the reacting site. In one embodiment, the functional variant is capable of enantioselectively transforming a (4S)-tetralone intermediate in the synthesis of sertraline, in which the functional variant displays remote stereospecificity for the tetralone intermediate.
本发明提供了一种分离的ω-转氨酶,该酶包含 SEQUENCE ID NO: 1 的氨基酸序列,或由 SEQUENCE ID NO: 2 的核酸序列编码,其来源于海洋海绵假弧菌(Pseudovibrio sp.还提供了ω-转氨酶的功能变体,这些变体是分离出来的,与 SEQUENC ID NO: 1 至少有 70% 的序列同一性,并且能够通过氧化脱氨转化为酮而对映选择性地解析外消旋胺,或通过还原胺化转化为胺而对映选择性地解析外消旋酮,其中胺和酮通常含有一个从反应位点移除的立体中心。在一个实施方案中,该功能变体能够在合成舍曲林的过程中对映选择性地转化(4S)-四氢萘酮中间体,其中该功能变体对四氢萘酮中间体具有远程立体特异性。