瑞林:总体在体外生物合成,基质范围的扩展,和生物工程的thioamidated双利
Asfandyar Sikandar1,2, Lana Vianey1, Kai Schließmann1
1Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarbrücken, 66123, Germany.
Journal of the American Chemical Society
|February 13, 2026
概括
研究人员重建了myxarylin,一种新的biarylitide. 这项研究揭示了交叉链接作为最初的步骤,通过前体基因工程使新的胺酸二利得以产生.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 自然产品的合成自然产品的合成
背景情况:
- 比亚利利是一种新型的核糖体合成和翻译后修饰 (RiPPs) 类.
- 它们的特点是异常小的前体和细胞染色体P450介导的交叉链接.
- 这些化合物的生物合成在很大程度上仍然没有特征.
研究的目的:
- 为了在体外完全使myxobacterial biarylitide,myxarylin的复制.
- 阐明利生物合成中涉及的序列步骤和酶机制.
- 通过前体改性来设计新型双化物,并探索酶基质范围.
主要方法:
- 在体外复制myxarylin生物合成途径.
- 使用纯化的细胞染色体P450 (P450BytO) 和甲基转移酶的酶定量.
- 模块化前体工程和由此产生的二利的分析.
- 确定甲基转移酶抑制剂复合物的晶体结构.
主要成果:
- 通过P450BytO进行交叉链接被确定为myxarylin生物合成的关键第一步.
- P450BytO表现出广泛的基质耐受性,使得通过前体基因工程能够合成新的硫胺酸二利.
- 前体的修改意外地将P450BytO活性从C端转移到N端.
- 通过prolyl oligopeptidase (POP) 和N-终端甲基化去除领导被描述为后续步骤.
- 晶体结构提供了对甲基转移酶基质选择性的见解.
结论:
- 该研究成功地在体外重建了myxarylin生物合成,确定了序列和关键酶.
- 模块化前体基因工程与P450BytO的耐受性相结合,可以产生新型的胺酸二利.
- 了解甲基转移酶活性的酶步骤和结构基础,有助于扩大基质范围的蛋白质工程.
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