articleNatureJul 19, 2023HYBRID OA

Mega-scale experimental analysis of protein folding stability in biology and design

Northwestern University · Japan Science and Technology Agency · +8 more institutions

PubMed
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Abstract

Abstract Advances in DNA sequencing and machine learning are providing insights into protein sequences and structures on an enormous scale 1 . However, the energetics driving folding are invisible in these structures and remain largely unknown 2 . The hidden thermodynamics of folding can drive disease 3,4 , shape protein evolution 5–7 and guide protein engineering 8–10 , and new approaches are needed to reveal these thermodynamics for every sequence and structure. Here we present cDNA display proteolysis, a method for measuring thermodynamic folding stability for up to 900,000 protein domains in a one-week experiment. From 1.8 million measurements in total, we curated a set of around 776,000 high-quality…

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