Cited by 264Protein Structure and DynamicsEnzyme Structure and FunctionMachine Learning in Bioinformatics

SPEACH_AF: Sampling protein ensembles and conformational heterogeneity with Alphafold2

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Stein, Richard A., Mchaourab, Hassane S.·2022·PLOS Computational Biology

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Abstract

The unprecedented performance of Deepmind's Alphafold2 in predicting protein structure in CASP XIV and the creation of a database of structures for multiple proteomes and protein sequence repositories is reshaping structural biology. However, because this database returns a single structure, it brought into question Alphafold's ability to capture the intrinsic conformational flexibility of proteins. Here we present a general approach to drive Alphafold2 to model alternate protein conformations through simple manipulation of the multiple sequence alignment via in silico mutagenesis. The approach is grounded in the hypothesis that the multiple sequence alignment must also encode for protein structural heterogeneity, thus its rational manipulation will enable Alphafold2 to sample alternate conformations. A systematic modeling pipeline is benchmarked against canonical examples of protein conformational flexibility and applied to interrogate the conformational landscape of membrane proteins. This work broadens the applicability of Alphafold2 by generating multiple protein conformations to be tested biologically, biochemically, biophysically, and for use in structure-based drug design.

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Authors
Stein, R. A., & Mchaourab, H. S.
Affiliations
Vanderbilt University (US)
Corresponding author
Stein, Richard A.
Venue
PLOS Computational Biology
Published
2022-08-22
Volume
18
Issue
8
Pages
e1010483
ISSN
  • 1553-734X (ISSN-L)
  • 1553-7358
OpenAlex
W4292636432
Cited by
258
References
52
Citations by year
2026: 55 · 2025: 64 · 2024: 76 · 2023: 51 · 2022: 12
FWCI
16.65
Type
journal article
Language
en
Open access
Locations
  • PLoS Computational Biology (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institutes of Health (GM128087, GM077659)
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 › Machine Learning in Bioinformatics
Keywords
AlphaFold2, protein conformational heterogeneity, protein ensembles, multiple sequence alignment, in silico mutagenesis, protein flexibility, membrane proteins, conformational landscape, structure-based drug design, protein structure prediction
MeSH terms
Amino Acid Sequence, Protein Conformation, Proteins, Drug Design, Sequence Alignment

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