+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7m3f | ||||||
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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 bile acid secretion / chemosensory behavior / response to fibroblast growth factor / cellular response to peptide / cellular response to vitamin D / phosphatidylinositol phospholipase C activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / calcium ion import / positive regulation of positive chemotaxis / fat pad development ...bile acid secretion / chemosensory behavior / response to fibroblast growth factor / cellular response to peptide / cellular response to vitamin D / phosphatidylinositol 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 / amino acid binding / branching morphogenesis of an epithelial tube / positive regulation of calcium ion import / regulation of calcium ion transport / cellular response to low-density lipoprotein particle stimulus / detection of calcium ion / anatomical structure morphogenesis / axon terminus / positive regulation of vasoconstriction / JNK cascade / chloride transmembrane transport / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / ossification / response to ischemia / G protein-coupled receptor activity / cellular response to glucose stimulus / positive regulation of insulin secretion / intracellular calcium ion homeostasis / vasodilation / integrin binding / phospholipase C-activating G protein-coupled receptor signaling pathway / cellular response to hypoxia / G alpha (i) signalling events / basolateral plasma membrane / 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 / cell surface / protein homodimerization activity / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.8 Å | ||||||
データ登録者 | Gao, Y. / Robertson, M.J. / Zhang, C. / Meyerowitz, J.G. / Panova, O. / Skiniotis, G. | ||||||
資金援助 | 米国, 1件
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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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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7m3f.cif.gz | 298.1 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7m3f.ent.gz | 245.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7m3f.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7m3f_validation.pdf.gz | 1014.2 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7m3f_full_validation.pdf.gz | 1021.9 KB | 表示 | |
XML形式データ | 7m3f_validation.xml.gz | 46.3 KB | 表示 | |
CIF形式データ | 7m3f_validation.cif.gz | 71.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/m3/7m3f ftp://data.pdbj.org/pub/pdb/validation_reports/m3/7m3f | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 1種, 2分子 AB
#1: タンパク質 | 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 |
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-糖 , 2種, 12分子
#2: 多糖 | #3: 糖 | ChemComp-NAG / |
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-非ポリマー , 4種, 10分子
#4: 化合物 | #5: 化合物 | #6: 化合物 | ChemComp-CA / #7: 化合物 | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: active-state human extracellular calcium-sensing receptor complexed with positive allosteric modulators etelcalcetide and evocalcet タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 値: 200 kDa/nm / 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 7.5 |
試料 | 濃度: 7 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / C2レンズ絞り径: 70 µm |
撮影 | 電子線照射量: 64.9 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 253836 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 2.8 Å | ||||||||||||||||||||||||
拘束条件 |
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