JadX 是一种自然产品结合蛋白
Andrew W Robertson, Stephanie M Forget, Camilo F Martinez-Farina
1Institute for Marine Biosciences, National Research Council of Canada , Halifax, Nova Scotia B3H 3Z1, Canada.
Journal of the American Chemical Society
|January 28, 2016
概括
这是一种来自Streptomyces venezuelae的新型蛋白质,与jadomycin和chloramphenicol结合. 这种蛋白质影响这些天然产品的产生,这表明它在二次代谢物生物合成中起着调节作用.
科学领域:
- 微生物学
- 生物化学
- 分子生物学
背景情况:
- 流虫ISP5230产生多种天然产物,包括贾多米辛和.
- 在 jadomycin 基因群中编码的 JadX 蛋白的功能以前是未知的.
研究的目的:
- 在功能上描述JadX蛋白质.
- 研究JadX与S. venezuelae产生的天然产品的相互作用.
- 探索 JadX 在二次代谢产生的作用.
主要方法:
- 进行了重组 JadX 蛋白质的生成和鉴定.
- 使用NMR光谱技术,包括化学转移扰动和WaterLOGSY,研究了蛋白质- 配体相互作用.
- 在S. venezuelae的受阻突变体中评估了JadX对贾多米辛和烯醇产生的影响.
主要成果:
- 在实验室中发现JadX与贾多米辛和烯结合.
- 在体内,JadX会影响Jadomycin和Chloramphenicol的产量.
- 这些发现表明JadX是一种不寻常的天然产品结合蛋白.
结论:
- JadX代表了一类能够与结构多样化的分子相互作用的天然产品结合蛋白.
- 双重结合能力和体内效应表明JadX在S. venezuelae中对二次代谢物生物合成的调节或信号传递起作用.
- 这项研究提供了JadX类蛋白质的第一个功能性特征,揭示了以前未知的调节机制.
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