6tq4

Crystal structure of the Orexin-1 receptor in complex with Compound 16

spinqualitylabelsall models 6tq4, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6tq4 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.299Å Ligands: NA, NV8, PGW, SO4, SOG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function OX1R_HUMAN Moderately selective excitatory receptor for orexin-A and, with a lower affinity, for orexin-B neuropeptide. Seems to be exclusively coupled to the G(q) subclass of heteromeric G proteins, which activates the phospholipase C mediated signaling cascade (By similarity). Publication Abstract from PubMed The orexin system, which consists of the two G protein-coupled receptors OX1 and OX2, activated by the neuropeptides OX-A and OX-B, is firmly established as a key regulator of behavioural arousal, sleep and wakefulness, and has been an area of intense research effort over the past two decades. X-ray structures of the receptors in complex with ten new antagonist ligands from diverse chemotypes are presented, which complement the existing structural information for the system and highlight the critical importance of lipophilic hotspots and water molecules for these peptidergic GPCR targets. Learnings from the structural information regarding the utility of pharmacophore models and how selectivity between OX1 and OX2 can be achieved are discussed. Comparison of orexin 1 and orexin 2 ligand binding modes using X-ray crystallography and computational analysis.,Rappas M, Ali A, Bennett KA, Brown JD, Bucknell SJ, Congreve M, Cooke RM, Cseke G, de Graaf C, Dore AS, Errey JC, Jazayeri A, Marshall FH, Mason JS, Mould R, Patel JC, Tehan B, Weir M, Christopher JA J Med Chem. 2019 Dec 20. doi: 10.1021/acs.jmedchem.9b01787. PMID:31860301 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Orexin and Orexin receptor

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