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揭示了致病性误解突变对男性蛋白质功能的动态中介影响
Qian Zhang1, Yinghao Guo2, Hao Wang1
1Research Center for Pharmacoinformatics, College of Pharmacy, Harbin Medical University, Harbin 150081, China.
The journal of physical chemistry letters
|March 5, 2026
概括
致病误解突变 (DCMMs) 改变了蛋白质的动态,而不仅仅是稳定性. 这些突变通过影响全性通路来破坏蛋白质相互作用,突显了研究蛋白质动态的必要性,以了解突变效应.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 结构生物学 结构生物学
背景情况:
- 了解致病误解突变 (DCMMs) 如何影响蛋白质功能至关重要.
- 蛋白质动态越来越被认为是蛋白质功能的关键调节者,但其在DCMMs中的作用尚未完全理解.
研究的目的:
- 研究DCMMs对Menin蛋白的动态及其与JunD的相互作用的影响.
- 阐明DCMMs影响蛋白-蛋白相互作用的机制,考虑稳定性和动态性.
主要方法:
- 在24个临床确认的DCMM中进行了分子动力学 (MD) 模拟.
- 罗塞塔的构造能量计算和多重复制的雨采样被用来评估稳定性和结合性亲和力.
- 采用Allosteric分析来确定中断相互作用的潜在机制.
主要成果:
- DCMMs并不一定会破坏Menin的稳定,但在不同的突变中会引起类似的动态变化.
- 通过破坏正常解离路径,DCMMs降低了Menin和JunD之间的结合亲和力.
- 阿洛斯特分析显示,DCMM均地破坏了Menin残留物E179和结合口袋之间的合.
结论:
- DCMMs主要通过改变蛋白质动态来影响Menin-JunD相互作用,其中质体起着重要作用.
- 这些发现强调了将蛋白质动态纳入结构功能框架的必要性,以全面了解DCMMs的影响.
- 向全性通路可能为与男性功能障碍相关的疾病提供新的治疗策略.
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