PreprintCited by 3Protein Structure and DynamicsEvolution and Genetic DynamicsRNA and protein synthesis mechanisms

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Improved prediction of site-rates from structure with averaging across homologs

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Norn, Christoffer, Oliveira, Fábio, André, Ingemar·2024·Protein Science

Preprint — published as 10.1002/pro.5086 · Paper page

Abstract

Variation in mutation rates at sites in proteins can largely be understood by the constraint that proteins must fold into stable structures. Models that calculate site-specific rates based on protein structure and a thermodynamic stability model have shown a significant but modest ability to predict empirical site-specific rates calculated from sequence. Models that use detailed atomistic models of protein energetics do not outperform simpler approaches using packing density. We demonstrate that a fundamental reason for this is that empirical site-specific rates are the result of the average effect of many different microenvironments in a phylogeny. By analyzing the results of evolutionary dynamics simulations, we show how averaging site-specific rates across many extant protein structures can lead to correct recovery of site-rate prediction. This result is also demonstrated in natural protein sequences and experimental structures. Using predicted structures, we demonstrate that atomistic models can improve upon contact density metrics in predicting site-specific rates from a structure. The results give fundamental insights into the factors governing the distribution of site-specific rates in protein families.

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Metadata

Authors
Norn, C., Oliveira, F., & André, I.
Affiliations
Lund University (SE)
Corresponding author
André, Ingemar
Venue
Protein Science
Publisher
openRxiv
Published
2024-03-01
Volume
33
Issue
7
Pages
e5086-e5086
ISSN
0961-8368 (ISSN-L)
OpenAlex
W4400017307
Cited by
3
References
1
Citations by year
2026: 1 · 2025: 1 · 2024: 1
FWCI
0.41
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Protein Science (publishedVersion, cc-by-nc)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nd)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
protein evolution, protein structure, thermodynamic stability, packing density, contact density, protein microenvironment, protein families
MeSH terms
Models, Molecular, Mutation, Protein Conformation, Proteins, Thermodynamics, Evolution, Molecular, Molecular Dynamics Simulation

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