一个近距离拍摄的蛋白质-蛋白质对接,从实验到理论和反向与PROTAC表演者
Khanh Quynh Thi Nguyen1, Hieu Hien Nguyen1, Huong Thi Thu Phung2
1Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
Journal of biomolecular structure & dynamics
|January 29, 2024
概括
我们开发了一种计算方法,通过分析关键的蛋白质相互作用来设计蛋白质溶解向金马 (PROTACs). 这种方法提高了识别针对性蛋白质降解疗法的有效PROTAC候选者的准确性.
科学领域:
- 生物化学 生物化学
- 计算化学计算化学
- 药物发现 药物发现 药物发现
背景情况:
- 化向化体 (PROTACs) 是诱导选择性蛋白质降解的异构功能分子.
- 有效的PROTAC设计需要理解目标蛋白,PROTAC和E3结合酶之间的三元复杂相互作用.
- 目前的方法可能无法完全捕捉有效降解所需的基本结合相互作用.
研究的目的:
- 为 PROTAC 设计引入一种新的计算虚拟选方法.
- 为了提高识别潜在的PROTAC候选者的准确性和可靠性.
- 促进针对性蛋白质降解疗法的战略开发.
主要方法:
- 开发了一种计算虚拟选方法,其中包含了必不可少的氨基酸相互作用.
- 使用结晶的VHL:PROTAC:SMARCA2BD三元复合体 (PDB: 7Z6L) 进行方法验证.
- 评估了结合多个基本限制对对接姿势准确性和RMSD值的影响.
主要成果:
- 增加蛋白质之间的基本约束减少了对接姿势,改善了与实验三元复合体的对齐.
- 三种特定的约束 (H键和两种疏水相互作用) 与已发表的复合物产生了最接近的相似之处.
- 平均RMSD从31.8/31.0 Å显著下降到24.4 Å,表明对接精度提高.
结论:
- 在PROTAC设计中,结合多个必不可少的安全装置对于提高对接精度至关重要.
- 开发的方法为设计新型PROTACs提供了一种系统的方法,以向雌激素受体为例.
- 这种计算策略可以加速针对性治疗的开发,并降低药物发现成本.
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