Unfolding under Pressure: An NMR Perspective.

Chembiochem

University Federico II, via Cynthia, 80110, Naples, Italy.

Published: August 2023

AI Article Synopsis

  • The review examines the use of solution NMR spectroscopy in studying protein unfolding induced by pressure, highlighting its importance in understanding protein structure stability.
  • It provides a detailed analysis of pressure-induced unfolding, addressing past technical challenges and emphasizing the insights gained from NMR spectroscopy observations.
  • The conclusion notes that hydration states of nonpolar side chains are significant in both pressure and cold denaturation, impacting the conformational stability of proteins.

Article Abstract

This review aims to analyse the role of solution nuclear magnetic resonance spectroscopy in pressure-induced in vitro studies of protein unfolding. Although this transition has been neglected for many years because of technical difficulties, it provides important information about the forces that keep protein structure together. We first analyse what pressure unfolding is, then provide a critical overview of how NMR spectroscopy has contributed to the field and evaluate the observables used in these studies. Finally, we discuss the commonalities and differences between pressure-, cold- and heat-induced unfolding. We conclude that, despite specific peculiarities, in both cold and pressure denaturation the important contribution of the state of hydration of nonpolar side chains is a major factor that determines the pressure dependence of the conformational stability of proteins.

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http://dx.doi.org/10.1002/cbic.202300164DOI Listing

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