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Default A Functional NMR for Membrane Proteins: Dynamics, Ligand Binding, and Allosteric Modulation

A Functional NMR for Membrane Proteins: Dynamics, Ligand Binding, and Allosteric Modulation

SUMMARY

By nature of conducting ions, transporting substrates and transducing signals, membrane channels, transporters and receptors are expected to exhibit intrinsic conformational dynamics. It is therefore of great interest and importance to understand the various properties of conformational dynamics acquired by these proteins, e.g., the relative population of states, exchange rate, conformations of multiple states, and how small molecule ligands modulate the conformational exchange. Because small molecule binding to membrane proteins can be weak and/or dynamic, structural characterization of these effects are very challenging. This review describes several NMR studies of membrane protein dynamics, ligand-induced conformational rearrangements, and the effect of ligand binding on the equilibrium of conformational exchange. The functional significance of the observed phenomena is discussed. This article is protected by copyright. All rights reserved.




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