6nbi

Cryo-EM structure of parathyroid hormone receptor type 1 in complex with a long-acting parathyroid hormone analog and G protein

Loading... Status: waiting for Mol* initialization Structural highlights 6nbi is a 6 chain structure with sequence from Bovin, Buffalo rat, Human and Synthetic construct sequences. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CLR Gene: PTH1R, PTHR, PTHR1 (HUMAN), Gnb1 (Buffalo rat), GNG2 (BOVIN) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease [PTH1R_HUMAN] Blomstrand lethal chondrodysplasia;Dental ankylosis;Eiken syndrome;Metaphyseal chondrodysplasia, Jansen type;Enchondromatosis. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease may be caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. Function [GBB1_RAT] Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction. [PTH1R_HUMAN] This is a receptor for parathyroid hormone and for parathyroid hormone-related peptide. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase and also a phosphatidylinositol-calcium second messenger system. [GBG2_BOVIN] Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction. Publication Abstract from PubMed The parathyroid hormone receptor-1 (PTH1R) is a class B G protein-coupled receptor central to calcium homeostasis and a therapeutic target for osteoporosis and hypoparathyroidism. Here we report the cryo-electron microscopy structure of human PTH1R bound to a long-acting PTH analog and the stimulatory G protein. The bound peptide adopts an extended helix with its amino terminus inserted deeply into the receptor transmembrane domain (TMD), which leads to partial unwinding of the carboxyl terminus of transmembrane helix 6 and induces a sharp kink at the middle of this helix to allow the receptor to couple with G protein. In contrast to a single TMD structure state, the extracellular domain adopts multiple conformations. These results provide insights into the structural basis and dynamics of PTH binding and receptor activation. Structure and dynamics of the active human parathyroid hormone receptor-1.,Zhao LH, Ma S, Sutkeviciute I, Shen DD, Zhou XE, de Waal PW, Li CY, Kang Y, Clark LJ, Jean-Alphonse FG, White AD, Yang D, Dai A, Cai X, Chen J, Li C, Jiang Y, Watanabe T, Gardella TJ, Melcher K, Wang MW, Vilardaga JP, Xu HE, Zhang Y Science. 2019 Apr 12;364(6436):148-153. doi: 10.1126/science.aav7942. PMID:30975883 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Transducin 3D structures

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