Probing Conformational Exchange Dynamics in a Short-Lived Protein Folding Intermediate by Real-Time Relaxation–Dispersion NMR
2017
NMR spectroscopy is a powerful tool for studying molecular dynamics at atomic resolution simultaneously for a large number of nuclear sites. In this communication, we combine two powerful NMR techniques, relaxation–dispersion NMR and real-time NMR, in order to obtain unprecedented information on the conformational exchange dynamics present in short-lived excited protein states, such as those transiently accumulated during protein folding. We demonstrate the feasibility of the approach for the amyloidogenic protein β2-microglobulin that folds via an intermediate state which is believed to be responsible for the onset of the aggregation process leading to amyloid formation.
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