+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7e6u | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | the complex of inactive CaSR and NB2D11 | |||||||||
要素 |
| |||||||||
キーワード | STRUCTURAL PROTEIN / G-protein-coupled receptor (GPCR) / Calcium-sensing receptor (CaSR) / cryo-electron microscopy (cryo-EM) / calcium ions / nanobody | |||||||||
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) Escherichia phage EcSzw-2 (ファージ) | |||||||||
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: 6 Å | |||||||||
データ登録者 | Geng, Y. / Chen, X.C. / Wang, L. / Cui, Q.Q. / Ding, Z.Y. / Han, L. / Kou, Y.J. / Zhang, W.Q. / Wang, H.N. / Jia, X.M. ...Geng, Y. / Chen, X.C. / Wang, L. / Cui, Q.Q. / Ding, Z.Y. / Han, L. / Kou, Y.J. / Zhang, W.Q. / Wang, H.N. / Jia, X.M. / Dai, M. / Shi, Z.Z. / Li, Y.Y. / Li, X.Y. | |||||||||
資金援助 | 中国, 2件
| |||||||||
引用 | ジャーナル: Elife / 年: 2021 タイトル: Structural insights into the activation of human calcium-sensing receptor. 著者: Xiaochen Chen / Lu Wang / Qianqian Cui / Zhanyu Ding / Li Han / Yongjun Kou / Wenqing Zhang / Haonan Wang / Xiaomin Jia / Mei Dai / Zhenzhong Shi / Yuying Li / Xiyang Li / Yong Geng / 要旨: Human calcium-sensing receptor (CaSR) is a G-protein-coupled receptor that maintains Ca homeostasis in serum. Here, we present the cryo-electron microscopy structures of the CaSR in the inactive and ...Human calcium-sensing receptor (CaSR) is a G-protein-coupled receptor that maintains Ca homeostasis in serum. Here, we present the cryo-electron microscopy structures of the CaSR in the inactive and agonist+PAM bound states. Complemented with previously reported structures of CaSR, we show that in addition to the full inactive and active states, there are multiple intermediate states during the activation of CaSR. We used a negative allosteric nanobody to stabilize the CaSR in the fully inactive state and found a new binding site for Ca ion that acts as a composite agonist with L-amino acid to stabilize the closure of active Venus flytraps. Our data show that agonist binding leads to compaction of the dimer, proximity of the cysteine-rich domains, large-scale transitions of seven-transmembrane domains, and inter- and intrasubunit conformational changes of seven-transmembrane domains to accommodate downstream transducers. Our results reveal the structural basis for activation mechanisms of CaSR and clarify the mode of action of Ca ions and L-amino acid leading to the activation of the receptor. | |||||||||
履歴 |
|
-構造の表示
ムービー |
ムービービューア |
---|---|
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 | 7e6u.cif.gz | 324.3 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb7e6u.ent.gz | 260.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7e6u.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 | 7e6u_validation.pdf.gz | 721.1 KB | 表示 | wwPDB検証レポート |
---|---|---|---|---|
文書・詳細版 | 7e6u_full_validation.pdf.gz | 755 KB | 表示 | |
XML形式データ | 7e6u_validation.xml.gz | 53.1 KB | 表示 | |
CIF形式データ | 7e6u_validation.cif.gz | 79.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/e6/7e6u ftp://data.pdbj.org/pub/pdb/validation_reports/e6/7e6u | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
|
---|---|
1 |
|
-要素
#1: タンパク質 | 分子量: 97326.094 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CASR, GPRC2A, PCAR1 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P41180 #2: 抗体 | 分子量: 15776.344 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) Escherichia phage EcSzw-2 (ファージ) 発現宿主: Escherichia phage EcSzw-2 (ファージ) Has protein modification | Y | |
---|
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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: CaSR / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 8 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: NITROGEN |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
---|---|
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: OTHER |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 70 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 | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1215058 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
|