Solution NMR spectroscopy for the determination of structures of membrane proteins in a lipid environment.
Methods Mol Biol. 2013;974:389-413
Authors: Arora A
Abstract
Several recent advancements have transformed solution NMR spectroscopy into a competitive, elegant, and eminently viable technique for determining the solution structures of membrane proteins at the level of atomic resolution. Once a good level of cell-based or cell-free expression and purification of a suitably sized membrane protein has been achieved, then NMR offers a combination of several versatile strategies, for example, choice of appropriate deuterated or non-deuterated detergents, temperature, and ionic strength; isotope labelling with (2)H, (13)C, (15)N, with or without protonation of Ile (?1), Leu, and Val methyl protons; combinatorial labelling of specific amino acids; transverse relaxation-optimized NMR spectroscopy-based, Nonuniform sampling-based, and other NMR experiments; measurement of residual dipolar couplings using stretched polyacrylamide gels or DNA nanotubes; and spin-labelling and paramagnetic relaxation enhancements. Strategic combinations of these advancements together with availability of highly sensitive cryogenically cooled probes equipped high-field NMR spectrometers (up to 1 GHz (1)H frequency) have allowed the perseverant investigator to successfully overcome several of the conventional pitfalls associated with the NMR technique and membrane proteins, viz., low sensitivity, poor sample stability, spectral crowding, and a limited number of NOEs and other constraints for structure calculations. This has resulted in an unprecedented growth in the number of successfully determined NMR structures of large and complex membrane proteins, and this technique now holds great promise for the structure determination of an ever larger body of membrane proteins.
[NMR paper] Dynamic pictures of membrane proteins in two-dimensional crystal, lipid bilayer and d
Dynamic pictures of membrane proteins in two-dimensional crystal, lipid bilayer and detergent as revealed by site-directed solid-state 13C NMR.
Related Articles Dynamic pictures of membrane proteins in two-dimensional crystal, lipid bilayer and detergent as revealed by site-directed solid-state 13C NMR.
Chem Phys Lipids. 2004 Nov;132(1):101-12
Authors: Saitô H
We have compared site-directed 13C solid-state NMR spectra of Ala- and/or Val-labeled membrane proteins, including bacteriorhodopsin (bR), pharaonis phoborhodopin (ppR), its cognate...
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[NMR paper] Structure determination of aligned samples of membrane proteins by NMR spectroscopy.
Structure determination of aligned samples of membrane proteins by NMR spectroscopy.
Related Articles Structure determination of aligned samples of membrane proteins by NMR spectroscopy.
Magn Reson Chem. 2004 Feb;42(2):162-71
Authors: Nevzorov AA, Mesleh MF, Opella SJ
The paper briefly reviews the process of determining the structures of membrane proteins by NMR spectroscopy of aligned samples, describes the integration of recent developments in the interpretation of spectra of aligned proteins and illustrates the application of these methods...
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11-24-2010 09:25 PM
[NMR paper] NMR solution structure determination of membrane proteins reconstituted in detergent
NMR solution structure determination of membrane proteins reconstituted in detergent micelles.
Related Articles NMR solution structure determination of membrane proteins reconstituted in detergent micelles.
FEBS Lett. 2003 Nov 27;555(1):144-50
Authors: Fernández C, Wüthrich K
As an alternative to X-ray crystallography, nuclear magnetic resonance (NMR) spectroscopy in solution can be used for three-dimensional structure determination of small membrane proteins, preferably proteins with beta-barrel fold. This paper reviews recent achievements as...
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[NMR paper] Backbone dynamics of membrane proteins in lipid bilayers: the effect of two-dimension
Backbone dynamics of membrane proteins in lipid bilayers: the effect of two-dimensional array formation as revealed by site-directed solid-state 13C NMR studies on Ala- and Val-labeled bacteriorhodopsin.
Related Articles Backbone dynamics of membrane proteins in lipid bilayers: the effect of two-dimensional array formation as revealed by site-directed solid-state 13C NMR studies on Ala- and Val-labeled bacteriorhodopsin.
Biochim Biophys Acta. 2003 Oct 13;1616(2):127-36
Authors: Saitô H, Yamamoto K, Tuzi S, Yamaguchi S
We have recorded...
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[NMR paper] Structure determination of membrane proteins by NMR spectroscopy.
Structure determination of membrane proteins by NMR spectroscopy.
Related Articles Structure determination of membrane proteins by NMR spectroscopy.
Biochem Cell Biol. 2002;80(5):597-604
Authors: Opella SJ, Nevzorov A, Mesleb MF, Marassi FM
Current strategies for determining the structures of membrane proteins in lipid environments by NMR spectroscopy rely on the anisotropy of nuclear spin interactions, which are experimentally accessible through experiments performed on weakly and completely aligned samples. Importantly, the anisotropy of...
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11-24-2010 08:49 PM
[NMR paper] Determination of solution structures of paramagnetic proteins by NMR.
Determination of solution structures of paramagnetic proteins by NMR.
Related Articles Determination of solution structures of paramagnetic proteins by NMR.
Eur Biophys J. 1998;27(4):367-75
Authors: Turner DL, Brennan L, Chamberlin SG, Louro RO, Xavier AV
Standard procedures for using nuclear Overhauser enhancements (NOE) between protons to generate structures for diamagnetic proteins in solution from NMR data may be supplemented by using dipolar shifts if the protein is paramagnetic. This is advantageous since the electron -nuclear dipolar...
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11-17-2010 11:06 PM
Investigation of the utility of selective methyl protonation for determination of membrane protein structures
Investigation of the utility of selective methyl protonation for determination of membrane protein structures
Steve C. C. Shih, Ileana Stoica and Natalie K. Goto
Journal of Biomolecular NMR; 2008; 42(1); pp 49-58
Abstract
Polytopic α-helical membrane proteins present one of the final frontiers for protein structural biology, with significant challenges causing severe under-representation in the protein structure databank. However, with the advent of hardware and methodology geared to the study of large molecular weight complexes, solution NMR is being increasingly considered as a tool...