通过一种类似ThiF的酶家族成员Streptococcus pneumoniae进行印胺宏循环
Anshul Rajput1, Keelie S Butler1, Daniel A Springer1
1Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27412, United States.
Organic letters
|May 21, 2025
概括
研究人员在人类病原体Streptococcus pneumoniae中发现了一种新的酶反应. 这一发现扩大了已知的ThiF类酶的化学结构,这些酶参与了天然产品的生物合成.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 自然产品化学 自然产品化学
背景情况:
- 类似ThiF的酶是各种Ribosomally合成和后翻译修饰 (RiPPs) 生物合成途径的关键催化剂.
- 这些酶以形成特定的化学键而闻名,包括蒂奥拉克和胺酸链接.
研究的目的:
- 探索新的化学反应,并扩大已知的ThiF类酶的功能表.
- 通过全面的基因组分析来确定新的RiPP途径及其相关酶.
主要方法:
- 全球基因组挖掘被用来识别潜在的RiPP集群.
- 在Streptococcus pneumoniae.e中发现了一个被指定为"ind"的最小的RiPP集群.
- 进行了体外生化测试,以描述已识别的酶IndF的功能.
主要成果:
- 这项研究在人类病原体中发现了一个新的RiPP集群Streptococcus pneumoniae.
- 酶IndF的生物化学表征揭示了印胺 (Trp-Ile) 连接的形成.
- 这代表了第一个在RiPP途径中的印胺链接的实例,以及ThiF类酶的新催化活性.
结论:
- 发现IndF及其独特的催化活性扩大了已知的ThiF类酶的化学空间.
- 这一发现突显了在微生物基因组内发现新的生物化学反应的潜力.
- 在Streptococcus pneumoniae中确定的途径为研究RiPP生物合成和酶功能提供了一个新的系统.
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