在对PROTAC三元复合体进行建模时,PRosettaC的性能优于AlphaFold3
Joseph M Schulz1, Sarah I Schürer2, Robert C Reynolds3
1Department of Molecular and Cellular Pharmacology, University of Miami, Miami, FL, USA.
Scientific reports
|October 29, 2025
概括
精确建模三元复合体是PROTAC药物设计的关键. 这项研究对AlphaFold-3和PRosettaC进行了基准测试,发现PRosettaC更好地捕捉了几何准确性,特别是在动态模拟中,改善了in silico工具选择.
科学领域:
- 生物化学和结构生物学.
- 计算化学和药物发现
背景情况:
- 使用向蛋白质分解的向蛋白质降解 (PROTACs) 是一个有前途的治疗策略.
- 精确预测三元复杂结构对于合理的 PROTAC 设计至关重要,但仍然具有挑战性.
研究的目的:
- 系统地对AlphaFold-3和PRosettaC进行基准测试,以预测三元复杂结构.
- 用静态和动态评估方法评估结构预测工具的性能.
主要方法:
- 基准测试AlphaFold-3和PRosettaC与36个结晶学解析的三元复合体进行比较.
- 使用DockQ评分对界面准确性的定量评估.
- 采用分子动力学模拟来动态评估预测模型.
主要成果:
- 由于非特异性蛋白相互作用,AlphaFold-3的性能可能会被高估.
- 在某些情况下,PRosettaC显示出更好的几何精度,但在链接器采样方面遇到了困难.
- 动态评估揭示了PRosettaC模型在静态分析中错过的短暂的高精度构造.
结论:
- 静态基准测试可能会忽视三元复合体形成中的蛋白质灵活性的重要性.
- 动态评估策略对于更准确地评估结构预测工具至关重要.
- 这项研究为评估PROTAC开发的in silico工具提供了一个精细的框架.
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