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Angew Chem Int Ed Engl. 2014 Apr 22;53(17):4312-7. doi: 10.1002/anie.201311275. Epub 2014 Mar 18.

Probing transient conformational states of proteins by solid-state R(1ρ) relaxation-dispersion NMR spectroscopy.

Author information

1
Univ. Grenoble Alpes, Institut de Biologie Structurale (IBS), CEA, DSV, IBS, 38027 Grenoble (France); CNRS, IBS, 38027 Grenoble (France).

Abstract

The function of proteins depends on their ability to sample a variety of states differing in structure and free energy. Deciphering how the various thermally accessible conformations are connected, and understanding their structures and relative energies is crucial in rationalizing protein function. Many biomolecular reactions take place within microseconds to milliseconds, and this timescale is therefore of central functional importance. Here we show that R1ρ relaxation dispersion experiments in magic-angle-spinning solid-state NMR spectroscopy make it possible to investigate the thermodynamics and kinetics of such exchange process, and gain insight into structural features of short-lived states.

KEYWORDS:

protein dynamics; relaxation dispersion; solid-state NMR spectroscopy; transient conformations; ubiquitin

PMID:
24644028
PMCID:
PMC3997346
DOI:
10.1002/anie.201311275
[Indexed for MEDLINE]
Free PMC Article

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