7l0s

Structure of NTS-NTSR1-Gi complex in lipid nanodisc, noncanonical state, with AHD

spinqualitylabelsall models 7l0s, resolution 4.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7l0s is a 5 chain structure with sequence from Homo sapiens and Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 4.5Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function NTR1_RAT Receptor for the tridecapeptide neurotensin. It is associated with G proteins that activate a phosphatidylinositol-calcium second messenger system. Publication Abstract from PubMed G-protein-coupled receptors (GPCRs) are the largest superfamily of transmembrane proteins and the targets of over 30% of currently marketed pharmaceuticals. Although several structures have been solved for GPCR-G protein complexes, few are in a lipid membrane environment. Here, we report cryo-EM structures of complexes of neurotensin, neurotensin receptor 1 and Galpha(i1)beta(1)gamma(1) in two conformational states, resolved to resolutions of 4.1 and 4.2 A. The structures, determined in a lipid bilayer without any stabilizing antibodies or nanobodies, reveal an extended network of protein-protein interactions at the GPCR-G protein interface as compared to structures obtained in detergent micelles. The findings show that the lipid membrane modulates the structure and dynamics of complex formation and provide a molecular explanation for the stronger interaction between GPCRs and G proteins in lipid bilayers. We propose an allosteric mechanism for GDP release, providing new insights into the activation of G proteins for downstream signaling. Cryo-EM structure of an activated GPCR-G protein complex in lipid nanodiscs.,Zhang M, Gui M, Wang ZF, Gorgulla C, Yu JJ, Wu H, Sun ZJ, Klenk C, Merklinger L, Morstein L, Hagn F, Pluckthun A, Brown A, Nasr ML, Wagner G Nat Struct Mol Biol. 2021 Mar;28(3):258-267. doi: 10.1038/s41594-020-00554-6. , Epub 2021 Feb 25. PMID:33633398 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Neurotensin receptor Transducin 3D structures

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