主动站点循环工程取消了在氧化聚合成酶中捕获水的方法
Prabhakar L Srivastava1, Sam T Johns2, Rebecca Walters2
1School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, United Kingdom.
ACS catalysis
|November 9, 2023
概括
工程合成酶 (TS) 可以消除水的捕获和化. 在patchoulol synthase (PTS) 和germacradiene-11-ol synthase (Gd11olS) 中修改Hα-1循环可以产生像α-bulnesene这样的循环碳化合物.
科学领域:
- 生物化学 生物化学
- 酵素工程是什么意思 酵素工程
- 自然产品的合成自然产品的合成
背景情况:
- 合成酶 (TS) 是关键的酶,可以从线性前体合成多种结构.
- 来自Pogostemon cablin的patchoulol合成酶 (PTS) 专门从法纳西二酸盐中产生patchoulol.
- 控制TS的氧化活性是产生特定烯骨架的关键.
研究的目的:
- 设计合成酶,特别是PTS,以消除水捕获和减少基化.
- 研究Hα-1循环在控制TS活动和产品形成中的作用.
- 开发一种可通用的策略,用于工程化聚合成酶以产生循环碳化合物.
主要方法:
- 使用模拟指导工程来修改PTS.
- 用于改变PTS和germacradiene-11-ol合成酶 (Gd11olS) 中保存的Hα-1循环,使用了局部导向的突变发生.
- 进行了产品分析,以确定产生的烯骨.
主要成果:
- 工程 PTS 变种被生成,成功消除了水捕获.
- 在PTS和Gd11olS中修改Hα-1循环显著降低了基化.
- 这种修改导致了循环中性碳化合物中间体的产生,包括来自PTS的α-bulnesene和来自Gd11olS的isolepidozene.
结论:
- Hα-1循环修饰是一种有效的策略,用于设计基合成酶以控制氧化.
- 这种方法允许生产复杂的循环碳化合物,而不需要先前的结构确定或建模.
- 这些发现提供了一种可通用的方法,用于为新型烯合成量身定制TS活动.
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