arXiv:2502.02371q-bio.BMcs.AI2025-02被引 2

RapidNet精准识别药物结合口袋,提升无靶点依赖的分子对接精度。

RAPID-Net: Accurate Pocket Identification for Binding-Site-Agnostic Docking

  • 基于深度学习的口袋预测模型,可无缝集成至对接流程
  • 在PoseBusters上实现54.9%的Top-1构象(RMSD<2Å)命中率
  • 能发现远端功能位点,助力别构抑制剂设计

准确识别可成药口袋及其特征对基于结构的药物设计至关重要。本文提出RAPID-Net,一种深度学习驱动的口袋预测算法,可精确预测结合口袋并无缝集成至对接流程。在PoseBusters基准测试中,RAPID-Net引导的AutoDock Vina取得54.9%的Top-1构象(RMSD < 2 Å)且符合化学有效性标准,优于DiffBindFR的49.1%。在最具挑战性的时间划分数据集(2021年9月30日后提交结构)上,该方法达到53.1%的命中率,虽低于AlphaFold 3的59.5%,但仍表现优异。值得注意的是,在92.2%的情况下,RAPID-Net引导的Vina至少生成一个RMSD < 2 Å的构象,表明精度瓶颈在于构象排序而非采样。RAPID-Net具有轻量化推理、高可扩展性与竞争性精度,适用于大规模虚拟筛选。在多个基准数据集上,其在对接精度和口袋-配体交集率方面均优于PUResNet与Kalasanty。此外,其在药物相关靶点上的表现展示了加速新药研发的潜力。对于SARS-CoV-2的RNA依赖性RNA聚合酶,RAPID-Net揭示了比现有工具更广泛的潜在结合口袋,包括传统方法忽略的次级空腔,为别构抑制剂设计提供新机会。

原文摘要 · Abstract (English)

Accurate identification of druggable pockets and their features is essential for structure-based drug design and effective downstream docking. Here, we present RAPID-Net, a deep learning-based algorithm designed for the accurate prediction of binding pockets and seamless integration with docking pipelines. On the PoseBusters benchmark, RAPID-Net-guided AutoDock Vina achieves 54.9% of Top-1 poses with RMSD < 2 A and satisfying the PoseBusters chemical-validity criterion, compared to 49.1% for DiffBindFR. On the most challenging time split of PoseBusters aiming to assess generalization ability (structures submitted after September 30, 2021), RAPID-Net-guided AutoDock Vina achieves 53.1% of Top-1 poses with RMSD < 2 A and PB-valid, versus 59.5% for AlphaFold 3. Notably, in 92.2% of cases, RAPID-Net-guided Vina samples at least one pose with RMSD < 2 A (regardless of its rank), indicating that pose ranking, rather than sampling, is the primary accuracy bottleneck. The lightweight inference, scalability, and competitive accuracy of RAPID-Net position it as a viable option for large-scale virtual screening campaigns. Across diverse benchmark datasets, RAPID-Net outperforms other pocket prediction tools, including PUResNet and Kalasanty, in both docking accuracy and pocket-ligand intersection rates. Furthermore, we demonstrate the potential of RAPID-Net to accelerate the development of novel therapeutics by highlighting its performance on pharmacologically relevant targets. RAPID-Net accurately identifies distal functional sites, offering new opportunities for allosteric inhibitor design. In the case of the RNA-dependent RNA polymerase of SARS-CoV-2, RAPID-Net uncovers a wider array of potential binding pockets than existing predictors, which typically annotate only the orthosteric pocket and overlook secondary cavities.

分子对接口袋预测药物设计深度学习

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