计算机驱动的米洛酶从白菜虫的演化,以有效地生产 (R) - 硫黄
Ruobin Sun1, Heou Huang1, Ziyue Wang1
1Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, P. R. China.
Journal of agricultural and food chemistry
|May 29, 2024
概括
研究人员设计了一种白菜虫氨酶 (BbMyr) 来有效地从西兰花中生产 (R) - 硫黄 (SFN). 一种突变的酶DE9显著提高了可持续SFN合成的催化效率.
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?
- 代谢学 代谢学 代谢学
背景情况:
- 氨酶 (Myr) 对于将葡萄糖酸盐转化为生物活性化合物至关重要.
- 来自西兰花种子的葡萄糖 (GRA) 是 (R) - 硫黄 (SFN) 的前体.
- 需要有效和可持续的SFN生产方法.
研究的目的:
- 为了在大肠杆菌中异质地表达白菜菌胺酶 (BbMyr),用于 (R) -SFN合成.
- 通过蛋白质工程来提高BbMyr的催化效率.
- 为 (R) -SFN生产建立一个环境可持续的酶化过程.
主要方法:
- 在大肠杆菌中BbMyr基因的异质表达.
- 为 (R) -SFN生产优化全细胞催化条件.
- 结合性,模拟驱动的BbMyr.的突变发生.
- 分子动力学模拟用于分析酶突变.
主要成果:
- 通过重组大肠杆菌全细胞催化实现了1.6g/L (R) -SFN的产生.
- 在最佳条件下 (pH4.5,45°C) 获得了20.8mg/g西兰花种子的产量.
- 开发了一个突变的DE9 (N321D/Y426S),具有2.91倍的催化效率 (kcat/KM).
结论:
- 在大肠杆菌中,BbMyr可以有效地生产并用于 (R) -SFN合成.
- 蛋白质工程显著提高了BbMyr的催化性能.
- 这项研究为可持续的酶 (R) -SFN生产提供了基础.
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