使用计算机辅助组合变异酶提高酒精脱酶活性以有效合成 (S) -2-chloro-1-(2,4-dichlorophenyl) 醇
Wenjie Ye1, Jingwen Xie2, Weijie Gao1
1State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai 200237, China.
Journal of agricultural and food chemistry
|August 27, 2025
概括
酒精脱酶 (LkADH) 的酶工程显著改善了 (S) - 2 - - 1 - 2 - 双乙醇的合成,这是抗真菌药物卢里可纳的关键中间体.
科学领域:
- 生物催化和酶工程
- 医学化学
- 有机合成
背景情况:
- 在合成抗真菌药物卢里科纳方面,的前体 (S) - 2 - - 1 - 2 - 双乙醇 (S) - CPEO) 是至关重要的.
- 有效和刻板选择性合成 (S) -CPEO对于制药生产至关重要.
研究的目的:
- 设计一种突变的酒精脱酶 (LkADH),用于 (S) -CPEO的高效和立体选择性合成.
- 确定增强酶活性和催化效率的关键突变.
主要方法:
- 用虚拟和突变检测LkADH中的有益突变.
- 用多重序列对齐来确定保存的活性部位残留物.
- 组合图书馆被构建并选以产生改进的酶变体.
- 进行了分子动力学模拟以了解增强活性的机制.
主要成果:
- 与野生类型相比,最终的突变物LkADH(M3) 的催化效率增加了29.1倍.
- LkADH(M3) 有效地减少了600g/L的基质,其度超过99.5% (ee).
- 这种工程酶实现了654g·L−1·d−1的时空记录.
结论:
- 通过向突变酶重新设计可以显著提高生物催化性能.
- 设计的LkADH(M3) 为 (S) -CPEO生产提供了高效和可持续的途径.
- 在酶活性部位内的基质稳定有助于提高催化效率.
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