5vn7

Structure of bacteriorhodopsin from crystals grown at 20 deg Celcius using GlyNCOC15+4 as an LCP host lipid

spinqualitylabelsall models 5vn7, resolution 2.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5vn7 is a 2 chain structure with sequence from Halobacterium salinarum NRC-1. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.7Å Ligands: LYR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function BACR_HALSA Light-driven proton pump. Publication Abstract from PubMed Lipidic cubic phase (LCP) has been widely recognized as a promising membrane-mimicking matrix for biophysical studies of membrane proteins and their crystallization in a lipidic environment. Application of this material to a wide variety of membrane proteins, however, is hindered due to a limited number of available host lipids, mostly monoacylglycerols (MAGs). Here, we designed, synthesized and characterized a series of chemically stable lipids resistant to hydrolysis, with properties complementary to the widely used MAGs. In order to assess their potential to serve as host lipids for crystallization, we characterized the phase properties and lattice parameters of mesophases made of two most promising lipids at a variety of different conditions by polarized light microscopy and small-angle X-ray scattering. Both lipids showed remarkable chemical stability and an extended LCP region in the phase diagram covering a wide range of temperatures down to 4 degrees C. One of these lipids has been used for crystallization and structure determination of a prototypical membrane protein bacteriorhodopsin at 4 degrees C and 20 degrees C. Chemically Stable Lipids for Membrane Protein Crystallization.,Ishchenko A, Peng L, Zinovev E, Vlasov A, Lee SC, Kuklin A, Mishin A, Borshchevskiy V, Zhang Q, Cherezov V Cryst Growth Des. 2017 Jun 7;17(6):3502-3511. doi: 10.1021/acs.cgd.7b00458. Epub , 2017 May 12. PMID:29290736 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Bacteriorhodopsin 3D structures

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