PreprintCited by 57Protein Structure and DynamicsMachine Learning in BioinformaticsEnzyme Structure and Function

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Prediction of inter-chain distance maps of protein complexes with 2D attention-based deep neural networks

Open access
Guo, Zhiye, Liu, Jian, Skolnick, Jeffrey, Cheng, Jianlin·2022·Nature Communications

Preprint — published as 10.1038/s41467-022-34600-2

Abstract

Residue-residue distance information is useful for predicting the tertiary structures of protein monomers or the quaternary structures of protein complexes. Many deep learning methods have been developed to predict intra-chain residue-residue distances of monomers accurately, but very few methods can accurately predict inter-chain residue-residue distances of protein complexes. We develop a new deep learning method CDPred (i.e., Complex Distance Prediction) based on the 2D attention-powered residual network architecture to address the gap. CDPred predicts the inter-chain distance maps of dimers (homodimers or heterodimers) from the features extracted from multiple sequence alignments (MSAs) and the intra-chain distance maps of predicted tertiary structures of monomers. Tested on two homodimer test datasets, CDPred achieves the precision of 61.56% and 43.26% for top L/5 inter-chain contact predictions (L: length of the monomer in homodimer), respectively, which is substantially higher than DeepHomo’s 37.40% and 23.08% and GLINTER’s 48.09% and 36.74%. And tested on the two heterodimer test datasets, the top L/5 inter-chain contact prediction precision (L: length of the shorter monomer in heterodimer) of CDPred is 47.59% and 22.87% respectively, which surpasses GLINTER’s 23.24% and 13.49%. Moreover, we demonstrate that the residue-residue co-evolutionary features calculated from multiple sequence alignments by a deep learning language model are more informative for the inter-chain contact prediction than the traditional statistical optimization approach of maximizing direct co-evolutionary signals, and large intra-chain distances in the intra-chain distance maps of monomers are more useful for the inter-chain distance prediction than small intra-chain distances.

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Metadata

Authors
Guo, Z., Liu, J., Skolnick, J., & Cheng, J.
Affiliations
  • University of Missouri (US)
  • Georgia Institute of Technology (US)
Corresponding author
Cheng, Jianlin
Venue
Nature Communications
Publisher
openRxiv
Published
2022-06-20
Volume
13
Issue
1
Pages
6963-6963
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4309190357
Cited by
57
References
1
Citations by year
2026: 11 · 2025: 11 · 2024: 12 · 2023: 21 · 2022: 2
FWCI
3.76
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
  • National Science Foundation (1763246, 1759934, R01GM093123)
  • U.S. Department of Energy (DEAR0001213, DESC0021303, DESC0020400)
  • National Institutes of Health
  • National Institute of General Medical Sciences (R01GM093123, R01GM146340, R35GM118039)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Machine Learning in Bioinformatics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Structural Biology › Enzyme Structure and Function
Keywords
protein complexes, ResNet, homodimer, heterodimer, quaternary structure, AlphaFold2-Multimer
MeSH terms
Proteins, Neural Networks, Computer, Computational Biology

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