Out-of-equilibrium selection pressure enhances inference from protein sequence data

Fuente: arXiv
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Autores principales: Dietler, Nicola, Malbranke, Cyril, Bitbol, Anne-Florence
Formato: Preprint
Publicado: 2026
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author Dietler, Nicola
Malbranke, Cyril
Bitbol, Anne-Florence
author_facet Dietler, Nicola
Malbranke, Cyril
Bitbol, Anne-Florence
contents Homologous proteins have similar three-dimensional structures and biological functions that shape their sequences. The resulting coevolution-driven correlations underlie methods from Potts models to AlphaFold, which infer protein structure and function from sequences. Using a minimal model, we show that fluctuating selection strength and the onset of new selection pressures improve coevolution-based inference of structural contacts. Our conclusions extend to realistic synthetic data and to the inference of interaction partners. Out-of-equilibrium noise arising from ubiquitous variations in natural selection thus enhances, rather than hinders, the success of inference from protein sequences.
format Preprint
id arxiv_https___arxiv_org_abs_2602_11427
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Out-of-equilibrium selection pressure enhances inference from protein sequence data
Dietler, Nicola
Malbranke, Cyril
Bitbol, Anne-Florence
Biomolecules
Homologous proteins have similar three-dimensional structures and biological functions that shape their sequences. The resulting coevolution-driven correlations underlie methods from Potts models to AlphaFold, which infer protein structure and function from sequences. Using a minimal model, we show that fluctuating selection strength and the onset of new selection pressures improve coevolution-based inference of structural contacts. Our conclusions extend to realistic synthetic data and to the inference of interaction partners. Out-of-equilibrium noise arising from ubiquitous variations in natural selection thus enhances, rather than hinders, the success of inference from protein sequences.
title Out-of-equilibrium selection pressure enhances inference from protein sequence data
topic Biomolecules
url https://arxiv.org/abs/2602.11427