The asymmetric reductive amination of ketones with ammonia using engineered amine dehydrogenases (AmDHs) is a particularly attractive and environmentally friendly method for the synthesis of chiral amines. However, one major challenge for these engineered AmDHs is their limited range of accepted substrates. Herein, several engineered AmDHs were developed through the evolution of naturally occurring
Asymmetric synthesis of primary amines catalyzed by thermotolerant fungal reductive aminases
作者:Juan Mangas-Sanchez、Mahima Sharma、Sebastian C. Cosgrove、Jeremy I. Ramsden、James R. Marshall、Thomas W. Thorpe、Ryan B. Palmer、Gideon Grogan、Nicholas J. Turner
DOI:10.1039/d0sc02253e
日期:——
Chiral primaryamines are important intermediates in the synthesis of pharmaceutical compounds. Fungal reductive aminases (RedAms) are NADPH-dependent dehydrogenases that catalyse reductive amination of a range of ketones with short-chain primaryamines supplied in an equimolar ratio to give corresponding secondary amines. Herein we describe structural and biochemical characterisation as well as synthetic
手性伯胺是药物化合物合成中的重要中间体。真菌还原性氨基化酶(RedAms)是NADPH依赖性的脱氢酶,可催化以等摩尔比提供的短链伯胺对一系列酮进行还原性胺化反应,生成相应的仲胺。本文中,我们描述了来自Neosartorya spp的两种RedAms的结构和生化特性以及合成应用。(Nf RedAm和NfisRedAm)在真菌RedAms中表现出独特的活性,即使用氨水作为胺伴侣的出色能力。使用这些酶,我们证明了多种伯胺的合成,转化率高达> 97%,并且出色的对映体过量。温度依赖性研究表明,与该家族中的其他酶相比,这些同源物还具有更高的热稳定性。它们的合成适用性进一步得到了证明,它产生了数个周转数(TN)高达14000的伯胺和仲胺,以及连续的流动反应,在空时产率下获得了手性胺,如(R)-2-氨基己烷8.1 g L -1 h -1。Nf RedAm的显着特征Nfis RedAm和Nfis RedA
Antibody therapeutics that bind STAT3
申请人:Sorrento Therapeutics, Inc.
公开号:US10233255B2
公开(公告)日:2019-03-19
The present disclosure provides anti-STAT3 antibodies, and antigen-binding portions thereof. In certain embodiments, the antibodies or fragments thereof, are used for the treatment of cancer.
本公开提供了抗 STAT3 抗体及其抗原结合部分。在某些实施方案中,抗体或其片段可用于治疗癌症。
SUCCINIMIDE-BASED COPOLYMERS AND USE AS HYDRATE INHIBITORS
申请人:Saudi Arabian Oil Company
公开号:EP3452532B1
公开(公告)日:2021-03-24
Separate Sets of Mutations Enhance Activity and Substrate Scope of Amine Dehydrogenase
作者:Robert D. Franklin、Conner J. Mount、Bettina R. Bommarius、Andreas S. Bommarius
DOI:10.1002/cctc.201902364
日期:2020.5.7
average of 2.5‐fold higher activity toward aliphaticketones and an 8.0 °C increase in melting temperature. L‐AmDH‐TV did not show significant changes in relative activity for different substrates. In contrast, L39A, L39G, A112G, and T133G in varied combinations added to L‐AmDH‐TV changed the shape of the substrate binding pocket. L‐AmDH‐TV was not active on ketones larger than 2‐hexanone. L39A and L39G