The Evolution of Local Energetic Frustration in Protein Families
Freiberger, M. I.; Ruiz-Serra, V. I.; Pontes, C.; Romero-Durana, M.; Galaz-Davison, P.; Ramirez-Sarmiento, C.; Schuster, C. D.; Marti, M. A.; Wolynes, P. G.; Ferreiro, D. U.; Parra, R. G.; Valencia, A.
Show abstract
Energetic local frustration offers a biophysical perspective to interpret the effects of sequence variability on protein families. Here we present a methodology to analyze local frustration patterns within protein families that allows us to uncover constraints related to stability and function, and identify differential frustration patterns in families with a common ancestry. We have analyzed these signals in very well studied cases such as PDZ, SH3, and {beta} globins and RAS families. Recent advances in protein structure prediction make it possible to analyze a vast majority of the protein space. An automatic and unsupervised proteome-wide analysis on the SARS-CoV-2 virus demonstrates the potential of our approach to enhance our understanding of the natural phenotypic diversity of protein families beyond single protein instances. We have applied our method to modify biophysical properties of natural proteins based on their family properties, as well as perform unsupervised analysis of large datasets to shed light on the physicochemical signatures of poorly characterized proteins such as emergent pathogens.
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