三元复合几何和氨酸定位指导了PROTAC诱导的可降解复合物的生成
Harish Kumar1, M Elizabeth Sobhia1
1Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar, Mohali, Punjab 160062, India.
The journal of physical chemistry. B
|January 23, 2026
概括
理性 PROTAC 设计是通过一个新的计算框架来预测蛋白质降解效率来提升的. 这种方法模拟了三元复杂几何和链接效应,使得针对性蛋白质降解剂的开发能够应对具有挑战性的疾病.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 药物发现 药物发现 药物发现
背景情况:
- 蛋白质溶解向基因组 (PROTACs) 实现了向蛋白质降解,为以前无法向的向药物创造了革命性的药物发现.
- 理性的PROTAC设计受到评估三元复杂几何,无处不在的可行性和链接器对降解的影响的挑战所限制.
研究的目的:
- 为系统评估PROTAC三元复杂几何和降解潜力的开发一个整合性的计算框架.
- 为合理的 PROTAC 开发提供一个基于机制的和可概括的战略.
主要方法:
- 集成三元复杂生成,基于RMSD的聚类,CRL2VHL复杂建模,素近距离分析和结构导向动态.
- 该框架应用于PTP1B,这是一种酸酶,涉及瘤信号.
- 利用分子动力学,PCA,TICA和马尔科夫状态建模来分析降解能力的结构.
主要成果:
- 通过使用自动化的Python脚本来生成和过超过6900个三元复杂姿势,用于姿势集群和lysine-to-E2距离评估.
- 分子动力学模拟确定了对降解有竞争力的 conformations 和动态过渡.
- 导向Arg69的对接丰富了对降解有能力的几何形状,在生成氨酸可访问的姿势方面超过了AlphaFold-Multimer.
结论:
- 开发的计算框架为合理的 PROTAC 设计提供了一种系统和机械基础的方法.
- 这一策略有助于优化链接器架构和三元复杂几何,以提高蛋白质降解的速度.
- 该框架提供了一个可推广的解决方案,用于在各种治疗目标中推进PROTAC的开发.
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