Cited by 22Computational Drug Discovery MethodsProtein Structure and DynamicsProtein Degradation and Inhibitors

Unified modeling of 3D molecular generation via atomic interactions with PocketXMol

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Peng, Xingang, Guo, Ruihan, Guo, Fenglin, Wang, Ziyi, Sun, Jiayu, Guan, Jiaqi, Jia, Yinjun, Xu, Yan +7 more·2026·Cell

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Abstract

ABSTRACT Understanding molecular interactions is essential to structural biology and drug discovery. Despite the progress of AI models in revealing and exploiting the interaction mechanisms for various applications, they are predominantly tailored to specific tasks without fully exploiting the underlying transferability across molecular data and tasks. Here, we present PocketXMol, an atom-level generative foundation model to decipher fundamental atomic interactions for general protein-pocket-interacting molecular tasks. It adopts a novel unified generative framework with an innovative task prompt mechanism and an exclusive atom-level representation, making it applicable to diverse tasks covering structure prediction and design of small molecules and peptides, without requiring fine-tuning. PocketXMol was compared to 55 baseline models across 13 typical tasks, achieving state-of-the-art performance in 11 tasks and remaining competitive in the others. We successfully utilized PocketXMol to design novel small molecules that inhibit caspase-9 with efficacy comparable to that of commercial pan-caspase inhibitors. Furthermore, we employed PocketXMol to design PD-L1-binding peptides, demonstrating a success rate substantially higher than random library screening. Three representative peptides underwent further experiments, which validated the cellular specificity and confirmed their potential for molecular probing and therapeutics. PocketXMol presents a powerful and versatile tool with promising prospects for future applications and will have a profound impact on AI-aided drug discovery.

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Authors
Peng, X., Guo, R., Guo, F., Wang, Z., Sun, J., Guan, J., Jia, Y., Xu, Y., Huang, Y., Zhang, M., Peng, J., Wang, X., Han, C., Wang, Z., & Ma, J.
Affiliations
  • Peking University (CN)
  • University of Illinois Urbana-Champaign (US)
  • Tsinghua University (CN)
  • Fujian Medical University (CN)
  • Center for Life Sciences (CN)
Corresponding author
  • Wang, Xinquan
  • Wang, Zihua
  • Ma, Jianzhu
Venue
Cell
Publisher
Elsevier BV
Published
2026-04
Volume
189
Issue
7
Pages
1904-1922.e28
ISSN
0092-8674 (ISSN-L)
OpenAlex
W7130380853
Cited by
22
References
25
Citations by year
2026: 21 · 2025: 1
FWCI
76.24
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China
Topics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
Keywords
3D molecular generation, peptide design, structure prediction
MeSH terms
Humans, Models, Molecular, Peptides, Protein Binding, Drug Design, Caspase 9, Small Molecule Libraries, Drug Discovery, Caspase Inhibitors, Molecular Docking Simulation

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