蛋白质-蛋白质接口中的挫折在PROTAC三元复合物的合作性中起着核心作用
Ning Ma1, Supriyo Bhattacharya2, Sanychen Muk2
1Department of Computational and Quantitative Medicine, Beckman Research Institute of the City of Hope, Duarte, CA, USA. NMa@coh.org.
Nature communications
|September 29, 2025
概括
向蛋白质分解的仿真体 (PROTACs) 可实现向蛋白质降解. 在PROTAC目标复合体中的接口挫折与有效性相关,提供了一个新的设计策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 向蛋白质分解的仿真体 (PROTACs) 是用于向蛋白质降解的双功能分子.
- PROTACs 招募 E3 泛素结合酶来向蛋白质,诱导泛素化和蛋白质体降解.
- 了解PROTAC结构-功能关系至关重要,但由于复杂的动态而具有挑战性.
研究的目的:
- 研究 PROTAC 复合体中 SMARCA2-VHL E3 酶接口的结构动力学.
- 探索接口结构灵活性和PROTAC有效性之间的关系.
- 为优化 PROTAC 设计建立基于结构的方法.
主要方法:
- 分子动力学模拟来分析接口的结构灵活性.
- 用X射线晶体学来确定SMARCA2-VHL-PROTAC复合物的结构.
- 界面挫折的量化和与实验合作性数据的相关性.
主要成果:
- 该SMARCA2-VHL接口是形状灵活,通过无序的循环稳定.
- 接口残留物在能量方面呈现出低于最佳的或"丧"的配置.
- 接口丧程度与 PROTAC 的合作性和有效性相关.
结论:
- 接口挫折是评估PROTAC复合体稳定性的可量化的指标.
- 量化界面挫折提供了一个合理的,基于结构的策略来指导PROTAC设计.
- 这种方法可以加速开发新的PROTAC治疗方法.
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