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来自Corynebacterium casei的一个酶还原酶的识别和表征

Shijin Wu¹, Xiaojing Ma¹, Hongde Yan²

¹College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China.

International journal of biological macromolecules

|March 1, 2024

概括

一种来自Corynebacterium casei (CcER) 的新型酶还原酶 (ER) 已成功表达和特征. 这种强大的酶有效地从不和基质中合成反纯的性化合物.

科学领域:

生物催化剂是一种生物催化剂.
酶工程是什么? 酶工程是什么?
有机合成有机合成

背景情况:

恩-还原酶 (ERs) 是不对称还原的关键生物催化剂.
在制药和精细化学品中,Enantiopure性化合物至关重要.
开发具有增强性质的新型ER对于高效合成至关重要.

研究的目的:

介绍和描述一种来自Corynebacterium casei (CcER) 的新型酶还原酶.
评估CcER的生物催化特性,稳定性和基质范围.
评估CcER在合成性化合物中所具有的潜力.

主要方法:

在大肠杆菌BL21(DE3) 中CcER的异质表达.
重组CcER的净化和表征.
在不同的温度和pH条件下对酶活性进行测定.
基质转化和立体选择性分析使用2-环素-1-one和 (R) -carvone.

主要成果:

在40°C和pH值6.5.5的情况下,CcER表现出最佳活性.
该酶在40°C以下和pH值6.0-7.0之间表现出良好的稳定性,具有高的甲醇耐受性.
CcER有效地降低了α,β不和化合物,实现了2-环素-1-one的完全转化和 (R) - 碳减的高立体选择性 (98%的转化,96%的立体选择性).

结论:

CcER是一种强大的多功能恩降解酶,具有可用于工业应用的巨大潜力.
描述的CcER提供了一个有价值的工具,用于刻板选择性合成奇拉化合物.
这项研究强调了微生物酶在可持续化学合成中的实用性.

关键词:

不对称的减少方法生物催化剂是一种生物催化剂.在Corynebacterium casei的研究中,艾尼降解酶 (ene-reductase) 是一种酶.基因组开采是为了挖掘基因组.

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