5n2r

Crystal structure of stabilized A2A adenosine receptor A2AR-StaR2-bRIL in complex with PSB36 at 2.8A resolution

spinqualitylabelsall models 5n2r, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5n2r is a 1 chain structure with sequence from Escherichia coli and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Ligands: 8JN, CLR, NA, OLA, OLC, TAR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function AA2AR_HUMAN Receptor for adenosine. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase.C562_ECOLX Electron-transport protein of unknown function. Publication Abstract from PubMed The adenosine A1 and A2A receptors belong to the purinergic family of G protein-coupled receptors, and regulate diverse functions of the cardiovascular, respiratory, renal, inflammation, and CNS. Xanthines such as caffeine and theophylline are weak, non-selective antagonists of adenosine receptors. Here we report the structure of a thermostabilized human A1 receptor at 3.3 A resolution with PSB36, an A1-selective xanthine-based antagonist. This is compared with structures of the A2A receptor with PSB36 (2.8 A resolution), caffeine (2.1 A), and theophylline (2.0 A) to highlight features of ligand recognition which are common across xanthines. The structures of A1R and A2AR were analyzed to identify the differences that are important selectivity determinants for xanthine ligands, and the role of T2707.35 in A1R (M2707.35 in A2AR) in conferring selectivity was confirmed by mutagenesis. The structural differences confirmed to lead to selectivity can be utilized in the design of new subtype-selective A1R or A2AR antagonists. Structures of Human A1 and A2A Adenosine Receptors with Xanthines Reveal Determinants of Selectivity.,Cheng RKY, Segala E, Robertson N, Deflorian F, Dore AS, Errey JC, Fiez-Vandal C, Marshall FH, Cooke RM Structure. 2017 Aug 1;25(8):1275-1285.e4. doi: 10.1016/j.str.2017.06.012. Epub, 2017 Jul 14. PMID:28712806 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Adenosine A2A receptor 3D structures

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