Cited by 46Protein Structure and DynamicsEnzyme Structure and FunctionGenomics and Phylogenetic Studies

Reciprocal best structure hits: using AlphaFold models to discover distant homologues

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Monzon, Vivian, Paysan-Lafosse, Typhaine, Wood, Valerie, Bateman, Alex·2022·Bioinformatics Advances

Published version of a preprint

Abstract

Motivation: The conventional methods to detect homologous protein pairs use the comparison of protein sequences. But the sequences of two homologous proteins may diverge significantly and consequently may be undetectable by standard approaches. The release of the AlphaFold 2.0 software enables the prediction of highly accurate protein structures and opens many opportunities to advance our understanding of protein functions, including the detection of homologous protein structure pairs. Results: In this proof-of-concept work, we search for the closest homologous protein pairs using the structure models of five model organisms from the AlphaFold database. We compare the results with homologous protein pairs detected by their sequence similarity and show that the structural matching approach finds a similar set of results. In addition, we detect potential novel homologs solely with the structural matching approach, which can help to understand the function of uncharacterized proteins and make previously overlooked connections between well-characterized proteins. We also observe limitations of our implementation of the structure-based approach, particularly when handling highly disordered proteins or short protein structures. Our work shows that high accuracy protein structure models can be used to discover homologous protein pairs, and we expose areas for improvement of this structural matching approach. Availability and Implementation: Information to the discovered homologous protein pairs can be found at the following URL: https://doi.org/10.17863/CAM.87873. The code can be accessed here: https://github.com/VivianMonzon/Reciprocal_Best_Structure_Hits. Supplementary information: Supplementary data are available at Bioinformatics Advances online.

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Authors
Monzon, V., Paysan-Lafosse, T., Wood, V., & Bateman, A.
Affiliations
  • European Bioinformatics Institute (GB)
  • European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus , Hinxton CB21 4HH, UK
  • University of Cambridge (GB)
Corresponding author
Monzon, Vivian
Venue
Bioinformatics Advances
Published
2022-01-01
Volume
2
Issue
1
Pages
vbac072-vbac072
ISSN
2635-0041 (ISSN-L)
OpenAlex
W4303184143
Cited by
46
References
41
Citations by year
2026: 6 · 2025: 5 · 2024: 13 · 2023: 16 · 2022: 6
FWCI
3.27
Type
journal article
Language
en
Open access
Locations
  • Bioinformatics Advances (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, public-domain)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Apollo (University of Cambridge) (submittedVersion)
  • Apollo
Funders
Wellcome Trust (218236/Z/19/Z)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
AlphaFold, protein structure prediction, sequence divergence, protein function prediction, protein disorder, model organisms

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