+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-30855 | |||||||||
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タイトル | Human Calcium-Sensing Receptor bound with L-Trp and calcium ions | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | GPCR / class C / calcium sensing receptor / MEMBRANE PROTEIN | |||||||||
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 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.5 Å | |||||||||
データ登録者 | Ling SL / Tian CL | |||||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Cell Res / 年: 2021 タイトル: Structural mechanism of cooperative activation of the human calcium-sensing receptor by Ca ions and L-tryptophan. 著者: Shenglong Ling / Pan Shi / Sanling Liu / Xianyu Meng / Yingxin Zhou / Wenjing Sun / Shenghai Chang / Xing Zhang / Longhua Zhang / Chaowei Shi / Demeng Sun / Lei Liu / Changlin Tian / 要旨: The human calcium-sensing receptor (CaSR) is a class C G protein-coupled receptor (GPCR) responsible for maintaining Ca homeostasis in the blood. The general consensus is that extracellular Ca is ...The human calcium-sensing receptor (CaSR) is a class C G protein-coupled receptor (GPCR) responsible for maintaining Ca homeostasis in the blood. The general consensus is that extracellular Ca is the principal agonist of CaSR. Aliphatic and aromatic L-amino acids, such as L-Phe and L-Trp, increase the sensitivity of CaSR towards Ca and are considered allosteric activators. Crystal structures of the extracellular domain (ECD) of CaSR dimer have demonstrated Ca and L-Trp binding sites and conformational changes of the ECD upon Ca/L-Trp binding. However, it remains to be understood at the structural level how Ca/L-Trp binding to the ECD leads to conformational changes in transmembrane domains (TMDs) and consequent CaSR activation. Here, we determined the structures of full-length human CaSR in the inactive state, Ca- or L-Trp-bound states, and Ca/L-Trp-bound active state using single-particle cryo-electron microscopy. Structural studies demonstrate that L-Trp binding induces the closure of the Venus flytrap (VFT) domain of CaSR, bringing the receptor into an intermediate active state. Ca binding relays the conformational changes from the VFT domains to the TMDs, consequently inducing close contact between the two TMDs of dimeric CaSR, activating the receptor. Importantly, our structural and functional studies reveal that Ca ions and L-Trp activate CaSR cooperatively. Amino acids are not able to activate CaSR alone, but can promote the receptor activation in the presence of Ca. Our data provide complementary insights into the activation of class C GPCRs and may aid in the development of novel drugs targeting CaSR. | |||||||||
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 | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_30855.map.gz | 8.6 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-30855-v30.xml emd-30855.xml | 11.1 KB 11.1 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_30855.png | 121.5 KB | ||
Filedesc metadata | emd-30855.cif.gz | 5.8 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-30855 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30855 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_30855.map.gz / 形式: CCP4 / 大きさ: 125 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.014 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : Human Calcium-Sensing Receptor bound with L-Trp and calcium ions
全体 | 名称: Human Calcium-Sensing Receptor bound with L-Trp and calcium ions |
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要素 |
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-超分子 #1: Human Calcium-Sensing Receptor bound with L-Trp and calcium ions
超分子 | 名称: Human Calcium-Sensing Receptor bound with L-Trp and calcium ions タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Extracellular calcium-sensing receptor
分子 | 名称: Extracellular calcium-sensing receptor / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 123.520828 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: MKTIIALSYI FCLVFADYKD DDDENLYFQG YGPDQRAQKK GDIILGGLFP IHFGVAAKDQ DLKSRPESVE CIRYNFRGFR WLQAMIFAI EEINSSPALL PNLTLGYRIF DTCNTVSKAL EATLSFVAQN KIDSLNLDEF CNCSEHIPST IAVVGATGSG V STAVANLL ...文字列: MKTIIALSYI FCLVFADYKD DDDENLYFQG YGPDQRAQKK GDIILGGLFP IHFGVAAKDQ DLKSRPESVE CIRYNFRGFR WLQAMIFAI EEINSSPALL PNLTLGYRIF DTCNTVSKAL EATLSFVAQN KIDSLNLDEF CNCSEHIPST IAVVGATGSG V STAVANLL GLFYIPQVSY ASSSRLLSNK NQFKSFLRTI PNDEHQATAM ADIIEYFRWN WVGTIAADDD YGRPGIEKFR EE AEERDIC IDFSELISQY SDEEEIQHVV EVIQNSTAKV IVVFSSGPDL EPLIKEIVRR NITGKIWLAS EAWASSSLIA MPQ YFHVVG GTIGFALKAG QIPGFREFLK KVHPRKSVHN GFAKEFWEET FNCHLQEGAK GPLPVDTFLR GHEESGDRFS NSST AFRPL CTGDENISSV ETPYIDYTHL RISYNVYLAV YSIAHALQDI YTCLPGRGLF TNGSCADIKK VEAWQVLKHL RHLNF TNNM GEQVTFDECG DLVGNYSIIN WHLSPEDGSI VFKEVGYYNV YAKKGERLFI NEEKILWSGF SREVPFSNCS RDCLAG TRK GIIEGEPTCC FECVECPDGE YSDETDASAC NKCPDDFWSN ENHTSCIAKE IEFLSWTEPF GIALTLFAVL GIFLTAF VL GVFIKFRNTP IVKATNRELS YLLLFSLLCC FSSSLFFIGE PQDWTCRLRQ PAFGISFVLC ISCILVKTNR VLLVFEAK I PTSFHRKWWG LNLQFLLVFL CTFMQIVICV IWLYTAPPSS YRNQELEDEI IFITCHEGSL MALGFLIGYT CLLAAICFF FAFKSRKLPE NFNEAKFITF SMLIFFIVWI SFIPAYASTY GKFVSAVEVI AILAASFGLL ACIFFNKIYI ILFKPSRNTI EEVRCSTAA HAFKVAARAT LRRSNVSRKR SSSLGGSTGS TPSSSISSKS NSEDPFPQPE RQKQQQPLAL TQQEQQQQPL T LPQQQRSQ QQPRCKQKVI FGSGTVTFSL SFDEPQKNAM AHRNSTHQNS LEAQKSSDTL TRHEPLLPLQ CGETDLDLTV QE TGLQGPV GGDQRPEVED PEELSPALVV SSSQSFVISG GGSTVTENVV NSHHHHHHHH HH UniProtKB: Extracellular calcium-sensing receptor |
-分子 #4: TRYPTOPHAN
分子 | 名称: TRYPTOPHAN / タイプ: ligand / ID: 4 / コピー数: 2 / 式: TRP |
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分子量 | 理論値: 204.225 Da |
Chemical component information | ChemComp-TRP: |
-分子 #5: CALCIUM ION
分子 | 名称: CALCIUM ION / タイプ: ligand / ID: 5 / コピー数: 4 / 式: CA |
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分子量 | 理論値: 40.078 Da |
-分子 #6: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 6 / コピー数: 8 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ChemComp-NAG: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: COUNTING / 平均電子線量: 62.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: DIFFRACTION |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: NONE |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 229926 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |