NMR paper Seeing the invisible by paramagnetic and diamagnetic NMR.

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[NMR paper] Seeing the invisible by paramagnetic and diamagnetic NMR.

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11-22-2013, 03:09 PM

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Seeing the invisible by paramagnetic and diamagnetic NMR.

Seeing the invisible by paramagnetic and diamagnetic NMR.

Related Articles Seeing the invisible by paramagnetic and diamagnetic NMR.

Biochem Soc Trans. 2013 Dec 1;41(6):1343-1354

Authors: Clore GM

Abstract
Sparsely populated transient states of proteins and their complexes play an important role in many biological processes including protein-protein and protein-DNA recognition, allostery, conformational selection, induced fit and self-assembly. These states are difficult to study as their low population and transient nature makes them effectively invisible to conventional structural and biophysical techniques. In the present article, I summarize recent NMR developments in our laboratory, including the use of paramagnetic relaxation enhancement, lifetime line broadening and dark-state exchange saturation transfer spectroscopy, that have permitted such sparsely populated states to be detected, characterized and, in some instances, visualized. I illustrate the application of these methods to the elucidation of mechanisms whereby transcription factors locate their specific target sites within an overwhelming sea of non-specific DNA, to the characterization of encounter complexes in protein-protein recognition, to large-scale interdomain motions involved in ligand binding, and to the interaction of monomeric amyloid ?-peptide with the surface of amyloid protofibrils and the internal cavity surface of the chaperonin GroEL.

PMID: 24256222 [PubMed - as supplied by publisher]

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