从农业相关的真菌中采集基因组导致具有类核心结构的d-葡萄糖化多基基
Journal of the American Chemical Society
|November 10, 2023
概括
研究人员发现了treconorin,一种由真菌产生的新型天然产品,具有独特的双循环核心和不寻常的葡萄糖修饰. 这一发现扩大了我们对真菌代谢物及其生物合成的理解.
科学领域:
- 自然产品化学
- 菌群学
- 生物化学
背景情况:
- 中的生物合成基因集群 (BGC) 是各种自然产品的来源.
- 了解真菌BGC对于发现新生物活性化合物至关重要.
- 在不同真菌物种中保存的BGC表明重要的生物作用.
研究的目的:
- 识别和描述由真菌BGC产生的新型天然产品.
- 调查一个保存的,不具特征的多基基基的生物合成途径和化学结构.
- 在天然产品生物合成中探索不寻常的糖化策略.
主要方法:
- 来自植物病原体和生物控制真菌的BGC的比较分析.
- 基因组挖掘用于识别BGC并预测相关代谢物.
- 确定代谢物特雷科诺林的化学结构.
- 拟议的生物合成途径分析,包括循环添加和糖基改性.
主要成果:
- 鉴定出一种未表征和保存的多基基基.
- 相关代谢物特雷科诺林具有独特的5,7双循环核.
- 建议通过 (4 + 3) 循环添加反应形成特雷科诺林的核心.
- 观察到一种新型的糖化策略,其中涉及从三醇分离中获得的d- 葡萄糖.
结论:
- 特雷科诺林是一种具有独特双循环核心的新型真菌天然产品.
- 生物合成途径涉及一种不寻常的循环添加和独特的糖分调节机制.
- 这一发现突显了比较基因组学在识别新型真菌代谢物和生物合成途径方面的潜力.
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