Statistical mechanics of warm and cold unfolding in proteins

TL;DR

This paper develops a statistical mechanics model that explicitly considers protein-water interactions to explain both cold and warm unfolding phenomena in globular proteins, aligning with known thermodynamic behaviors.

Contribution

It introduces a novel statistical mechanics framework that captures the coupling between proteins and water, enabling simultaneous description of cold and warm unfolding.

Findings

Successfully reproduces thermodynamic profiles of protein unfolding

Provides insight into the coupling effects between proteins and water

Models both cold and warm unfolding phenomena

Abstract

We present a statistical mechanics treatment of the stability of globular proteins which takes explicitly into account the coupling between the protein and water degrees of freedom. This allows us to describe both the cold and the warm unfolding, thus qualitatively reproducing the known thermodynamics of proteins.