复合的真菌聚基酸合成酶-酸合成酶混合蛋白质的组合
Thomas B Kakule1, Zhenjian Lin, Eric W Schmidt
1Department of Medicinal Chemistry, University of Utah , Salt Lake City, Utah 84112, United States.
Journal of the American Chemical Society
|December 2, 2014
概括
研究人员设计了真菌聚基合成酶 (PKS) 和非核糖体合成酶 (NRPS) 融合,以了解混合自然产品的形成. 他们制定了成功制造新型PKS-NRPS化合物的规则.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 合成生物学 合成生物学
背景情况:
- 的多基合成酶 (PKS) 从简单的前体产生复杂的分子.
- PKS可以与非核糖体合成酶 (NRPS) 融合,产生混合的多基胺氨基酸产品.
- 了解模块通信是设计这些混合途径的关键.
研究的目的:
- 调查PKS和NRPS模块之间的通信和兼容性.
- 确定乙载体蛋白 (ACP),凝结 (C) 和缩酶 (KR) 域在混合产品形成中的作用.
- 为设计真菌PKS-NRPS系统制定指导方针.
主要方法:
- 创建了57个基因融合,将基因组合为五种不同的真菌天然产品.
- 在PKS和NRPS组件之间进行了34个不同的模块交换.
- 在一个高产的真菌表达平台上分析了复合基因融合.
主要成果:
- 合成了六种新化合物,包括第一个产生高度分离的产品的PKS-NRPS融合.
- 已证明的C域表现出基质选择性.
- 显示的非熟悉的ACP可以在高度减少 (hr) PKS类中补充 PKS 功能.
- 在洛瓦斯塔丁合成中观察到一个前-迪尔斯-阿尔德中间体.
结论:
- 确定了工程真菌hr-PKS和PKS-NRPS产品的基本原则.
- 强调了混合天然产品生物合成中域相互作用和基质特异性的重要性.
- 提供了关于真菌生物化学反应的见解,例如在洛瓦斯塔丁合成中的迪尔斯-阿尔德反应.
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