7f24

Cryo-EM structure of the GTP-bound dopamine receptor 1 and mini-Gs complex without Nb35

spinqualitylabelsall models 7f24, resolution 4.16Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7f24 is a 4 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: Electron Microscopy, Resolution 4.16Å Ligands: GTP, LDP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed G protein-coupled receptors (GPCRs) comprise the largest family of membrane receptors and are the most important drug targets. An agonist-bound GPCR engages heterotrimeric G proteins and triggers the exchange of guanosine diphosphate (GDP) with guanosine triphosphate (GTP) to promote G protein activation. A complete understanding of molecular mechanisms of G protein activation has been hindered by a lack of structural information of GPCR-G protein complex in nucleotide-bound states. Here, we report the cryo-EM structures of the D1 dopamine receptor and mini-G(s) complex in the nucleotide-free and nucleotide-bound states. These structures reveal major conformational changes in Galpha such as structural rearrangements of the carboxyl- and amino-terminal alpha helices that account for the release of GDP and the GTP-dependent dissociation of Galpha from Gbetagamma subunits. As validated by biochemical and cellular signaling studies, our structures shed light into the molecular basis of the entire signaling events of GPCR-mediated G protein activation. Structural insights into G protein activation by D1 dopamine receptor.,Teng X, Chen S, Wang Q, Chen Z, Wang X, Huang N, Zheng S Sci Adv. 2022 Jun 10;8(23):eabo4158. doi: 10.1126/sciadv.abo4158. Epub 2022 Jun , 10. PMID:35687690 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Dopamine receptor 3D structures Transducin 3D structures

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