- PDB-7m3f: Asymmetric Activation of the Calcium Sensing Receptor Homodimer -
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基本情報
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データベース: PDB / ID: 7m3f
タイトル
Asymmetric Activation of the Calcium Sensing Receptor Homodimer
要素
Extracellular calcium-sensing receptor
キーワード
MEMBRANE PROTEIN / GPCR / calcium sensing receptor / active state / positive allosteric modulator / family C GPCR
機能・相同性
機能・相同性情報
regulation of presynaptic membrane potential / bile acid secretion / chemosensory behavior / cellular response to peptide / response to fibroblast growth factor / cellular response to vitamin D / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / calcium ion import / positive regulation of positive chemotaxis ...regulation of presynaptic membrane potential / bile acid secretion / chemosensory behavior / cellular response to peptide / response to fibroblast growth factor / cellular response to vitamin D / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / calcium ion import / positive regulation of positive chemotaxis / fat pad development / cellular response to hepatocyte growth factor stimulus / branching morphogenesis of an epithelial tube / amino acid binding / positive regulation of calcium ion import / regulation of calcium ion transport / cellular response to low-density lipoprotein particle stimulus / anatomical structure morphogenesis / detection of calcium ion / JNK cascade / positive regulation of vasoconstriction / axon terminus / chloride transmembrane transport / ossification / response to ischemia / cellular response to glucose stimulus / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G protein-coupled receptor activity / positive regulation of insulin secretion / intracellular calcium ion homeostasis / vasodilation / integrin binding / presynaptic membrane / G alpha (i) signalling events / basolateral plasma membrane / phospholipase C-activating G protein-coupled receptor signaling pathway / cellular response to hypoxia / G alpha (q) signalling events / transmembrane transporter binding / positive regulation of ERK1 and ERK2 cascade / G protein-coupled receptor signaling pathway / apical plasma membrane / neuronal cell body / positive regulation of cell population proliferation / calcium ion binding / positive regulation of gene expression / protein kinase binding / glutamatergic synapse / cell surface / protein homodimerization activity / identical protein binding / plasma membrane 類似検索 - 分子機能
GPCR, family 3, extracellular calcium-sensing receptor-related / G-protein coupled receptors family 3 signature 1. / G-protein coupled receptors family 3 signature 2. / GPCR, family 3, nine cysteines domain / GPCR, family 3, nine cysteines domain superfamily / Nine Cysteines Domain of family 3 GPCR / G-protein coupled receptors family 3 signature 3. / GPCR, family 3, conserved site / GPCR, family 3 / G-protein coupled receptors family 3 profile. ...GPCR, family 3, extracellular calcium-sensing receptor-related / G-protein coupled receptors family 3 signature 1. / G-protein coupled receptors family 3 signature 2. / GPCR, family 3, nine cysteines domain / GPCR, family 3, nine cysteines domain superfamily / Nine Cysteines Domain of family 3 GPCR / G-protein coupled receptors family 3 signature 3. / GPCR, family 3, conserved site / GPCR, family 3 / G-protein coupled receptors family 3 profile. / GPCR family 3, C-terminal / 7 transmembrane sweet-taste receptor of 3 GCPR / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I 類似検索 - ドメイン・相同性
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
R01NS092695
米国
引用
ジャーナル: Nature / 年: 2021 タイトル: Asymmetric activation of the calcium-sensing receptor homodimer. 著者: Yang Gao / Michael J Robertson / Sabrina N Rahman / Alpay B Seven / Chensong Zhang / Justin G Meyerowitz / Ouliana Panova / Fadil M Hannan / Rajesh V Thakker / Hans Bräuner-Osborne / Jesper ...著者: Yang Gao / Michael J Robertson / Sabrina N Rahman / Alpay B Seven / Chensong Zhang / Justin G Meyerowitz / Ouliana Panova / Fadil M Hannan / Rajesh V Thakker / Hans Bräuner-Osborne / Jesper M Mathiesen / Georgios Skiniotis / 要旨: The calcium-sensing receptor (CaSR), a cell-surface sensor for Ca, is the master regulator of calcium homeostasis in humans and is the target of calcimimetic drugs for the treatment of parathyroid ...The calcium-sensing receptor (CaSR), a cell-surface sensor for Ca, is the master regulator of calcium homeostasis in humans and is the target of calcimimetic drugs for the treatment of parathyroid disorders. CaSR is a family C G-protein-coupled receptor that functions as an obligate homodimer, with each protomer composed of a Ca-binding extracellular domain and a seven-transmembrane-helix domain (7TM) that activates heterotrimeric G proteins. Here we present cryo-electron microscopy structures of near-full-length human CaSR in inactive or active states bound to Ca and various calcilytic or calcimimetic drug molecules. We show that, upon activation, the CaSR homodimer adopts an asymmetric 7TM configuration that primes one protomer for G-protein coupling. This asymmetry is stabilized by 7TM-targeting calcimimetic drugs adopting distinctly different poses in the two protomers, whereas the binding of a calcilytic drug locks CaSR 7TMs in an inactive symmetric configuration. These results provide a detailed structural framework for CaSR activation and the rational design of therapeutics targeting this receptor.
履歴
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2021年3月18日
登録サイト: RCSB / 処理サイト: RCSB
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分子量: 101745.445 Da / 分子数: 2 / 由来タイプ: 組換発現 詳細: 1-16 is signaling sequence, 17-24 is FLAG epitope tag, 25-27 is an 3-alanine linker, the receptor sequence starts at residue Y28 that should be re-numbered to 20, and ends at V902 that should ...詳細: 1-16 is signaling sequence, 17-24 is FLAG epitope tag, 25-27 is an 3-alanine linker, the receptor sequence starts at residue Y28 that should be re-numbered to 20, and ends at V902 that should be re-numbered to 894. 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CASR, GPRC2A, PCAR1 / Cell (発現宿主): sf9 / 細胞株 (発現宿主): Sf9 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P41180