Center for the Study of Systems Biology

  • Home
  • About us
    • Members
  • Skolnick Research Group
    • Jeffrey Skolnick
    • Maximilian Brogi
    • Brendon Cara
    • Chad Choudhry
    • Brice Edelman
    • Jonathan Feldman
    • Jessica Gilmore Forness
    • Bartosz Ilkowski
    • Preetam Jukalkar
    • Giselle McPhilliamy
    • Asha Mira Rao
    • Hargobind Singh
    • Kyle Xu
    • Hongyi Zhou
    • Former Group Members
  • Publications
    • Publications
    • Preprints
  • Software and Services
    • Services
      • DESTINI
      • DR. PRODIS
      • ENTPRISE
      • ENTPRISE-X
      • FINDSITEcomb
      • FINDSITEcomb2.0
      • FRAGSITE
      • FRAGSITE2
      • FRAGSITEcombM
      • Know-GENE
      • LeMeDISCO
      • MEDICASCY
      • MOATAI-VIR
      • PHEVIR
      • PICMOA
    • Downloads
      • AF2Complex
      • AF3Complex
      • APoc
      • Cavitator
      • DBD-Hunter
      • DBD-Threader
      • EFICAz2.5
      • Fr-TM-align
      • GOAP
      • iAlign
      • IS-score
      • LIGSIFT
      • MENDELSEEK
      • PULCHRA
      • SAdLSA
      • Valsci
    • Databases
      • Apo and Holo Pairs
      • New Human GPCR Modeling and Virtual Screening
      • PDB-like Structures
    • Simulations
      • E. coli Intracellular Dynamics
  • News & Events
    • News
    • ARCHIVE: Distinguished Lecture Series in Systems Biology
  • Jobs

AF3Complex

Accurate structures of protein complexes are essential for understanding biological pathway function. A previous study showed how downstream modifications to AlphaFold 2 could yield AF2Complex, a model better suited for protein complexes. Here, we introduce AF3Complex, a model equipped with the same improvements as AF2Complex, along with a novel method for excluding ligands, built on AlphaFold 3.

Benchmarking AF3Complex and AlphaFold 3 on a large dataset of protein complexes, it was shown that AF3Complex outperforms AlphaFold 3 to a significant degree. Moreover, by evaluating the structures generated by AF3Complex on a dataset of protein-peptide complexes and antibody-antigen complexes, it was established that AF3Complex could create high-fidelity structures for these challenging complex types. Additionally, when deployed to generate structural predictions for the two antibody-antigen and seven protein-protein complexes used in the recent CASP16 competition, AF3Complex yielded structures that would have placed it among the top models in the competition.

Details described in the following publication:

Feldman, J, Skolnick J. 2025. AF3Complex Yields Improved Structural Predictions of Protein Complexes. bioRxiv 2025.02.27.640585; doi: https://doi.org/10.1101/2025.02.27.640585. PDF

Source Code

The AF3Complex source code is stored in the GitHub repository.

Note: This service is freely available to all academic and non-commercial users, only.

Questions and comments to Jonathan Feldman and Jeffrey Skolnick.

  • Skolnick Research Group
    • Jeffrey Skolnick
    • Maximilian Brogi
    • Brendon Cara
    • Chad Choudhry
    • Brice Edelman
    • Jonathan Feldman
    • Jessica Gilmore Forness
    • Bartosz Ilkowski
    • Preetam Jukalkar
    • Giselle McPhilliamy
    • Asha Mira Rao
    • Hargobind Singh
    • Kyle Xu
    • Hongyi Zhou
    • Former Group Members
  • Software and Services
    • Services
      • DESTINI
      • DR. PRODIS
      • ENTPRISE
      • ENTPRISE-X
      • FINDSITEcomb
      • FINDSITEcomb2.0
      • FRAGSITE
      • FRAGSITE2
      • FRAGSITEcombM
      • Know-GENE
      • LeMeDISCO
      • MEDICASCY
      • MOATAI-VIR
      • PHEVIR
      • PICMOA
    • Downloads
      • AF2Complex
      • AF3Complex
      • APoc
      • Cavitator
      • DBD-Hunter
      • DBD-Threader
      • EFICAz2.5
      • Fr-TM-align
      • GOAP
      • iAlign
      • IS-score
      • LIGSIFT
      • MENDELSEEK
      • PULCHRA
      • SAdLSA
      • Valsci
    • Databases
      • Apo and Holo Pairs
      • New Human GPCR Modeling and Virtual Screening
      • PDB-like Structures
    • Simulations
      • E. coli Intracellular Dynamics

Copyright © 2025 · Minimum Pro on Genesis Framework · WordPress · Log in