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Prediction of inter-chain distance maps of protein complexes with 2D attention-based deep neural networks
Open accessPreprint — 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)
- PMC
- PMC9666547
- 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
- gold
- doi.org
- 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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