PocketVina通过多口袋建模实现高效精准的分子对接,无需训练即可在标准显卡上运行。
PocketVina Enables Scalable and Highly Accurate Physically Valid Docking through Multi-Pocket Conditioning
- 结合口袋预测与多口袋系统探索,提升对接构象物理合理性
- 在4个基准测试中均达顶尖表现,尤其对未见靶点和柔性配体效果显著
- 适用于高通量药物筛选,比深度学习方法更省显存、更快
分子对接中生成物理合理配体结合构象仍是重大挑战,尤其针对未见或结构多样的靶点。我们提出PocketVina,一种快速、低内存消耗的基于搜索的对接框架,融合口袋预测与系统的多口袋探索。在PDBbind2020(timesplit和unseen)、DockGen、Astex和PoseBusters四个基准上评估,结果一致显示其在采样物理有效构象方面表现优异。在联合考虑配体RMSD与物理有效性(PB-valid)时达到当前最优性能,且在仅看RMSD时仍与深度学习方法竞争,尤其在结构多样和此前未见的靶点上优势明显。对不同柔性的配体也保持顶尖的物理有效对接精度。我们进一步构建了TargetDock-AI,一个包含超过50万对蛋白-配体的数据集,并标注了PubChem活性信息。在此大规模数据集上,PocketVina成功区分活性与非活性靶点,优于深度学习基线,同时所需GPU内存和运行时间显著更低。PocketVina提供了一种无需任务特定训练、可在标准GPU上高效运行的稳健可扩展对接策略,适用于高通量虚拟筛选和基于结构的药物发现。
原文摘要 · Abstract (English)
Sampling physically valid ligand-binding poses remains a major challenge in molecular docking, particularly for unseen or structurally diverse targets. We introduce PocketVina, a fast and memory-efficient, search-based docking framework that combines pocket prediction with systematic multi-pocket exploration. We evaluate PocketVina across four established benchmarks--PDBbind2020 (timesplit and unseen), DockGen, Astex, and PoseBusters--and observe consistently strong performance in sampling physically valid docking poses. PocketVina achieves state-of-the-art performance when jointly considering ligand RMSD and physical validity (PB-valid), while remaining competitive with deep learning-based approaches in terms of RMSD alone, particularly on structurally diverse and previously unseen targets. PocketVina also maintains state-of-the-art physically valid docking accuracy across ligands with varying degrees of flexibility. We further introduce TargetDock-AI, a benchmarking dataset we curated, consisting of over 500000 protein-ligand pairs, and a partition of the dataset labeled with PubChem activity annotations. On this large-scale dataset, PocketVina successfully discriminates active from inactive targets, outperforming a deep learning baseline while requiring significantly less GPU memory and runtime. PocketVina offers a robust and scalable docking strategy that requires no task-specific training and runs efficiently on standard GPUs, making it well-suited for high-throughput virtual screening and structure-based drug discovery.
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