在提奥基诺拉巴克生物合成中的碳素酸定制
Xuan Wang1, Xiaolin Tian2, Jiawei Guo1
1State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
Journal of natural products
|June 11, 2025
概括
研究人员阐明了在提奥基诺拉巴克 (TQB) 生物合成中形成的硫酸. 开发了一种新的化学酶法,以制造含有的TQB类似物,扩展合成化学工具.
科学领域:
- 生物化学 生物化学
- 自然产品生物合成 自然产品生物合成
- 合成生物学 合成生物学
背景情况:
- 天然产品中硫酸部分的生物合成是不太了解的.
- 来自* Pseudomonas fluorescens*的 siderophore,Thioquinolobactin (TQB) 具有一个硫酸组,但其形成机制尚不清楚.
- 目前对TQB生物合成基因集群和通路的了解并不能完全解释硫酸组合.
研究的目的:
- 阐明TQB中硫酸形成的生物合成机制.
- 确定关键酶及其在TQB生物合成中的作用.
- 利用TQB生物合成的见解,开发修改碳酸的新方法.
主要方法:
- 研究了双域蛋白QbsL (CoA结合酶和甲基转移酶活动) 和硫转移酶QbsK在TQB生物合成中的功能.
- 在 thiocarboxylic 酸形成的背景下,描述了 QbsL 和 QbsK 的酶活性.
- 开发了一种化学酶策略,将碳酸转化为碳酸.
主要成果:
- 证明QbsL和QbsK对于TQB中硫酸部分的组装至关重要.
- 确定了QbsL的双重CoA结合酶和甲基转移酶活动以及QbsK的硫转移酶活动对该途径至关重要.
- 通过使用开发的化学酶法,通过将碳素酸转化为碳素酸,成功生成含的TQB类似物.
结论:
- 解决了围绕TQB中硫酸生物合成的长期团.
- 建立了一种涉及QbsL和QbsK的新型酶机制,用于 thiocarboxylic 酸形成.
- 提供了一个新的化学酶工具包,用于修改碳酸和合成含有的新型天然产品类似物.
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