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-   -   [NMR paper] How to prepare membrane proteins for solid-state NMR: A case study on the alpha-helical integral membrane protein diacylglycerol kinase from E. coli. (http://www.bionmr.com/forum/journal-club-9/how-prepare-membrane-proteins-solid-state-nmr-case-study-alpha-helical-integral-membrane-protein-diacylglycerol-kinase-e-coli-10700/)

nmrlearner 12-01-2010 06:56 PM

How to prepare membrane proteins for solid-state NMR: A case study on the alpha-helical integral membrane protein diacylglycerol kinase from E. coli.
 
How to prepare membrane proteins for solid-state NMR: A case study on the alpha-helical integral membrane protein diacylglycerol kinase from E. coli.

Related Articles How to prepare membrane proteins for solid-state NMR: A case study on the alpha-helical integral membrane protein diacylglycerol kinase from E. coli.

Chembiochem. 2005 Sep;6(9):1693-700

Authors: Lorch M, Faham S, Kaiser C, Weber I, Mason AJ, Bowie JU, Glaubitz C

Several studies have demonstrated that it is viable to use microcrystalline preparations of water-soluble proteins as samples in solid-state NMR experiments [1-5]. Here, we investigate whether this approach holds any potential for studying water-insoluble systems, namely membrane proteins. For this case study, we have prepared proteoliposomes and small crystals of the alpha-helical membrane-protein diacylglycerol kinase (DGK). Preparations were characterised by 13C- and 15N-cross-polarization magic-angle spinning (CPMAS) NMR. It was found that crystalline samples produce better-resolved spectra than proteoliposomes. This makes them more suitable for structural NMR experiments. However, reconstitution is the method of choice for biophysical studies by solid-state NMR. In addition, we discuss the identification of lipids bound to membrane-protein crystals by 31P-MAS NMR.

PMID: 16138309 [PubMed - indexed for MEDLINE]



Source: PubMed


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