Cited by 281Protein Structure and DynamicsMachine Learning in BioinformaticsEnzyme Structure and Function

State-of-the-Art Estimation of Protein Model Accuracy Using AlphaFold

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Roney, James P., Ovchinnikov, Sergey·2022·Physical Review Letters

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Abstract

The problem of predicting a protein's 3D structure from its primary amino acid sequence is a longstanding challenge in structural biology. Recently, approaches like alphafold have achieved remarkable performance on this task by combining deep learning techniques with coevolutionary data from multiple sequence alignments of related protein sequences. The use of coevolutionary information is critical to these models' accuracy, and without it their predictive performance drops considerably. In living cells, however, the 3D structure of a protein is fully determined by its primary sequence and the biophysical laws that cause it to fold into a low-energy configuration. Thus, it should be possible to predict a protein's structure from only its primary sequence by learning an approximate biophysical energy function. We provide evidence that alphafold has learned such an energy function, and uses coevolution data to solve the global search problem of finding a low-energy conformation. We demonstrate that alphafold'slearned energy function can be used to rank the quality of candidate protein structures with state-of-the-art accuracy, without using any coevolution data. Finally, we explore several applications of this energy function, including the prediction of protein structures without multiple sequence alignments.

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  1. [14]See Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevLett.129.238101 for additional data and analyses, which includes Refs. [ 15– 17].

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Authors
Roney, J. P., & Ovchinnikov, S.
Affiliations
Harvard University (US)
Corresponding author
Ovchinnikov, Sergey
Venue
Physical Review Letters
Published
2022-11-28
Volume
129
Issue
23
Pages
238101-238101
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W4310159409
Cited by
281
References
27
Citations by year
2026: 45 · 2025: 70 · 2024: 79 · 2023: 62 · 2022: 25
FWCI
19.26
Type
journal article
Language
en
Open access
Locations
  • Physical Review Letters (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion, cc-by)
Funders
  • National Institutes of Health (DP5OD026389)
  • National Science Foundation (MCB2032259)
  • Simons Foundation (735929LPI)
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
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
AlphaFold, protein structure prediction, protein folding, multiple sequence alignment, protein 3D structure, deep learning
MeSH terms
Algorithms, Amino Acid Sequence, Models, Molecular, Protein Conformation, Proteins

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