Probing membrane protein orientation and structure using fast magic-angle-spinning solid-state NMR.
JOURNAL OF BIOMOLECULAR NMR 2004;
30:253-265. [PMID:
15754053 DOI:
10.1007/s10858-004-3452-3]
[Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2004] [Accepted: 09/02/2004] [Indexed: 05/24/2023]
Abstract
One and two-dimensional solid-state NMR experiments are discussed that permit probing local structure and overall molecular conformation of membrane-embedded polypeptides under Magic Angle Spinning. The functional dependence of a series of anisotropic recoupling schemes is analyzed using theoretical and numerical methods. These studies lead to the construction of a set of polarization dephasing or transfer units that probe local backbone conformation and overall molecular orientation within the same NMR experiment. Experimental results are shown for a randomly oriented peptide and for two model membrane-peptides reconstituted into lipid bilayers and oriented on polymer films according to a method proposed by Bechinger et al.
Collapse