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基本情報
登録情報 | データベース: PDB / ID: 7f8v | |||||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of the cholecystokinin receptor CCKBR in complex with gastrin-17 and Gi | |||||||||||||||||||||||||||||||||
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![]() | STRUCTURAL PROTEIN / G protein-coulped receptor / Cholecystokinin receptor CCKBR / Gastrin-17 | |||||||||||||||||||||||||||||||||
機能・相同性 | ![]() gastrin receptor activity / type B gastrin/cholecystokinin receptor binding / gland development / cholecystokinin receptor activity / cholecystokinin signaling pathway / gastric acid secretion / pH reduction / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / neuropeptide receptor activity / negative regulation of calcium ion-dependent exocytosis ...gastrin receptor activity / type B gastrin/cholecystokinin receptor binding / gland development / cholecystokinin receptor activity / cholecystokinin signaling pathway / gastric acid secretion / pH reduction / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / neuropeptide receptor activity / negative regulation of calcium ion-dependent exocytosis / G protein-coupled adenosine receptor signaling pathway / 1-phosphatidylinositol-3-kinase regulator activity / Gastrin-CREB signalling pathway via PKC and MAPK / negative regulation of adenylate cyclase activity / positive regulation of urine volume / positive regulation of neural precursor cell proliferation / negative regulation of synaptic transmission / digestive tract development / gamma-aminobutyric acid signaling pathway / neuronal dense core vesicle / peptide hormone binding / negative regulation of apoptotic signaling pathway / regulation of calcium ion transport / neuropeptide signaling pathway / Adenylate cyclase inhibitory pathway / positive regulation of vascular associated smooth muscle cell proliferation / response to nutrient / hippocampal mossy fiber to CA3 synapse / Peptide ligand-binding receptors / positive regulation of superoxide anion generation / Regulation of insulin secretion / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / cell body / GTPase binding / positive regulation of cytosolic calcium ion concentration / Ca2+ pathway / retina development in camera-type eye / midbody / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / cell surface receptor signaling pathway / positive regulation of ERK1 and ERK2 cascade / ciliary basal body / positive regulation of cell migration / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / intracellular membrane-bounded organelle / positive regulation of cell population proliferation / synapse / centrosome 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||
生物種 | ![]() | |||||||||||||||||||||||||||||||||
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: 3.3 Å | |||||||||||||||||||||||||||||||||
![]() | Zhang, X. / He, C. / Wang, M. / Zhou, Q. / Yang, D. / Zhu, Y. / Wu, B. / Zhao, Q. | |||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structures of the human cholecystokinin receptors bound to agonists and antagonists. 著者: Xuefeng Zhang / Chenglin He / Mu Wang / Qingtong Zhou / Dehua Yang / Ya Zhu / Wenbo Feng / Hui Zhang / Antao Dai / Xiaojing Chu / Jia Wang / Zhenlin Yang / Yi Jiang / Ulrich Sensfuss / ...著者: Xuefeng Zhang / Chenglin He / Mu Wang / Qingtong Zhou / Dehua Yang / Ya Zhu / Wenbo Feng / Hui Zhang / Antao Dai / Xiaojing Chu / Jia Wang / Zhenlin Yang / Yi Jiang / Ulrich Sensfuss / Qiuxiang Tan / Shuo Han / Steffen Reedtz-Runge / H Eric Xu / Suwen Zhao / Ming-Wei Wang / Beili Wu / Qiang Zhao / ![]() ![]() 要旨: Cholecystokinin receptors, CCKR and CCKR, are important neurointestinal peptide hormone receptors and play a vital role in food intake and appetite regulation. Here, we report three crystal ...Cholecystokinin receptors, CCKR and CCKR, are important neurointestinal peptide hormone receptors and play a vital role in food intake and appetite regulation. Here, we report three crystal structures of the human CCKR in complex with different ligands, including one peptide agonist and two small-molecule antagonists, as well as two cryo-electron microscopy structures of CCKR-gastrin in complex with G and G, respectively. These structures reveal the recognition pattern of different ligand types and the molecular basis of peptide selectivity in the cholecystokinin receptor family. By comparing receptor structures in different conformational states, a stepwise activation process of cholecystokinin receptors is proposed. Combined with pharmacological data, our results provide atomic details for differential ligand recognition and receptor activation mechanisms. These insights will facilitate the discovery of potential therapeutics targeting cholecystokinin receptors. | |||||||||||||||||||||||||||||||||
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 164.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 126.7 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 40502.863 Da / 分子数: 1 / 変異: S47N, G204A, E246A, A327S / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P04899 |
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#2: タンパク質 | 分子量: 38744.371 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P62873 |
#3: タンパク質 | 分子量: 7861.143 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P59768 |
#4: タンパク質・ペプチド | 分子量: 2098.203 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() |
#5: タンパク質 | 分子量: 50524.922 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P32239 |
研究の焦点であるリガンドがあるか | Y |
-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 |
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試料調製
構成要素 |
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由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||
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: ETHANE |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 1.75 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
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: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1338153 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 48.26 Å2 | ||||||||||||||||||||||||
拘束条件 |
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