Screening and Engineering the Synthetic Potential of Carboxylating Reductases from Central Metabolism and Polyketide Biosynthesis
作者:Dominik M. Peter、Lennart Schada von Borzyskowski、Patrick Kiefer、Philipp Christen、Julia A. Vorholt、Tobias J. Erb
DOI:10.1002/anie.201505282
日期:2015.11.2
Carboxylating enoyl‐thioester reductases (ECRs) are a recently discovered class of enzymes. They catalyze the highly efficient addition of CO2 to the double bond of α,β‐unsaturated CoA‐thioesters and serve two biological functions. In primary metabolism of many bacteria they produce ethylmalonyl‐CoA during assimilation of the central metabolite acetyl‐CoA. In secondary metabolism they provide distinct
[EN] METHOD FOR SYNTHESISING AMIDES<br/>[FR] PROCÉDÉ DE SYNTHÈSE D'AMIDES
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2018029097A1
公开(公告)日:2018-02-15
The present invention relates to a method for synthesising amides that is of general applicability. The method may be performed in vitro or in vivo. Cell lines for use in the in vivo methods also form aspects of the invention. The method for synthesising a non-natural amide comprises: a. reaction of a carboxylic acid with a naturally occurring CoA ligase or a variant thereof; and b. reaction of the product of step a with an amine in the presence of a naturally occurring acyltransferase or a variant thereof; with the proviso that where the CoA ligase and acyltransferase are both naturally occurring, they are not derived from the same source species and do not act sequentially in a metabolic pathway; and with the proviso that the non-natural product is not N-(E)-p-coumaroyl-3-hydroxyanthranilic acid or N-(E)-p-caffeoyl-3-hydroxyanthranilic acid. Further, a method for producing an active pharmaceutical ingredient by the aforementioned method and host cells for carrying out said methods are envisaged.
ATP Regeneration System in Chemoenzymatic Amide Bond Formation with Thermophilic CoA Ligase
作者:Chloé M. Lelièvre、Mélanie Balandras、Jean‐Louis Petit、Carine Vergne‐Vaxelaire、Anne Zaparucha
DOI:10.1002/cctc.201901870
日期:2020.2.20
counterparts. To limit the use of ATP, we implemented an ATP regeneration system combining polyphosphatekinase2 (PPK2 ClassIII) and inorganic pyrophosphatase. Suitability of this system was illustrated by the lab‐scale chemoenzymatic synthesis of N‐methylbutyrylamide in 77 % yield using low enzyme loading and 5 % molar ATP.
biosynthesized from acyl-CoA precursors by polyketide synthases. One of the limitations to combinatorial biosynthesis of polyketides has been the lack of a toolkit that describes the means of delivering novel acyl-CoA precursors necessary for polyketide biosynthesis. Using five acid-CoA ligases obtained from various plants and microorganisms, we biosynthesized an initial library of 79 acyl-CoA thioesters by screening
Uncovering the Formation and Selection of Benzylmalonyl-CoA from the Biosynthesis of Splenocin and Enterocin Reveals a Versatile Way to Introduce Amino Acids into Polyketide Carbon Scaffolds
polyketide structural diversification. Yet, this scope is currently restricted to simple aliphatic groups due to (1) limited variety of CoA-linked extender units, which lack aromatic structures and chemical reactivity, and (2) narrow acyltransferase (AT) specificity, which is limited to aliphatic CoA-linked extender units. In this report, we uncovered and characterized the first aromatic CoA-linked
通过生物合成工程选择性修饰碳支架对于聚酮化合物结构多样化很重要。然而,这一范围目前仅限于简单的脂肪族基团,因为 (1) CoA 连接的扩展单元种类有限,缺乏芳香结构和化学反应性,以及 (2) 酰基转移酶 (AT) 特异性窄,仅限于脂肪族 CoA连接的扩展器单元。在本报告中,我们发现并表征了来自链霉菌属中脾脏素和肠毒素的生物合成途径的第一个芳香 CoA 连接的扩展单元苄基丙二酰辅酶 A。CNQ431。其合成采用脱氨/还原羧化策略将苯丙氨酸转化为苄基丙二酰辅酶 A,从而在氨基酸和辅酶 A 连接的扩展单元合成之间建立联系。通过对其选择的表征,我们进一步验证了脾脏的 AT 结构域和抗霉素聚酮化合物合酶能够选择该扩展单元将苯基引入其双内酯支架中。参与形成这种扩展单元的生物合成机制是高度通用的,可以潜在地针对酪氨酸、组氨酸和天冬氨酸进行定制。所公开的芳香族扩展单元、面向氨基酸的合成途径和芳香族选择性 AT