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基本情報
登録情報 | データベース: PDB / ID: 8jrv | |||||||||
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タイトル | Cryo-EM structure of the glucagon receptor bound to glucagon and beta-arrestin 1 | |||||||||
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![]() | MEMBRANE PROTEIN / Complex structure / glucagon receptor / beta-arrestin 1 / glucagon | |||||||||
機能・相同性 | ![]() activated protein C (thrombin-activated peptidase) / positive regulation of establishment of endothelial barrier / renal water retention / Defective AVP does not bind AVPR2 and causes neurohypophyseal diabetes insipidus (NDI) / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / vasopressin receptor activity / glucagon receptor binding / negative regulation of coagulation / regulation of glycogen metabolic process ...activated protein C (thrombin-activated peptidase) / positive regulation of establishment of endothelial barrier / renal water retention / Defective AVP does not bind AVPR2 and causes neurohypophyseal diabetes insipidus (NDI) / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / vasopressin receptor activity / glucagon receptor binding / negative regulation of coagulation / regulation of glycogen metabolic process / hemostasis / glucagon receptor activity / telencephalon development / protein kinase A signaling / negative regulation of execution phase of apoptosis / feeding behavior / response to starvation / positive regulation of calcium ion import / exocytosis / positive regulation of systemic arterial blood pressure / positive regulation of intracellular signal transduction / peptide hormone binding / positive regulation of insulin secretion involved in cellular response to glucose stimulus / endocytic vesicle / Synthesis, secretion, and deacylation of Ghrelin / negative regulation of blood coagulation / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / Gamma-carboxylation of protein precursors / Common Pathway of Fibrin Clot Formation / Removal of aminoterminal propeptides from gamma-carboxylated proteins / cellular response to hormone stimulus / activation of adenylate cyclase activity / Intrinsic Pathway of Fibrin Clot Formation / hormone-mediated signaling pathway / positive regulation of vasoconstriction / response to nutrient / positive regulation of gluconeogenesis / response to cytokine / regulation of insulin secretion / cellular response to glucagon stimulus / viral budding from plasma membrane / guanyl-nucleotide exchange factor activity / cellular response to starvation / response to activity / gluconeogenesis / generation of precursor metabolites and energy / Cell surface interactions at the vascular wall / Post-translational protein phosphorylation / clathrin-coated endocytic vesicle membrane / hormone activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / regulation of blood pressure / Golgi lumen / negative regulation of inflammatory response / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Glucagon signaling in metabolic regulation / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / blood coagulation / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / glucose homeostasis / Cargo recognition for clathrin-mediated endocytosis / Clathrin-mediated endocytosis / secretory granule lumen / G alpha (s) signalling events / G alpha (q) signalling events / clathrin-dependent endocytosis of virus by host cell / cell surface receptor signaling pathway / positive regulation of ERK1 and ERK2 cascade / endosome / host cell surface receptor binding / G protein-coupled receptor signaling pathway / receptor ligand activity / endoplasmic reticulum lumen / signaling receptor binding / negative regulation of cell population proliferation / fusion of virus membrane with host plasma membrane / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / positive regulation of cell population proliferation / viral envelope / calcium ion binding / positive regulation of gene expression / negative regulation of apoptotic process / virion attachment to host cell / perinuclear region of cytoplasm / host cell plasma membrane / virion membrane / endoplasmic reticulum / Golgi apparatus / proteolysis / extracellular space / extracellular region / identical protein binding / membrane / plasma membrane 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 | |||||||||
![]() | Chen, K. / Zhang, C. / Lin, S. / Zhao, Q. / Wu, B. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Tail engagement of arrestin at the glucagon receptor. 著者: Kun Chen / Chenhui Zhang / Shuling Lin / Xinyu Yan / Heng Cai / Cuiying Yi / Limin Ma / Xiaojing Chu / Yuchen Liu / Ya Zhu / Shuo Han / Qiang Zhao / Beili Wu / ![]() 要旨: Arrestins have pivotal roles in regulating G protein-coupled receptor (GPCR) signalling by desensitizing G protein activation and mediating receptor internalization. It has been proposed that the ...Arrestins have pivotal roles in regulating G protein-coupled receptor (GPCR) signalling by desensitizing G protein activation and mediating receptor internalization. It has been proposed that the arrestin binds to the receptor in two different conformations, 'tail' and 'core', which were suggested to govern distinct processes of receptor signalling and trafficking. However, little structural information is available for the tail engagement of the arrestins. Here we report two structures of the glucagon receptor (GCGR) bound to β-arrestin 1 (βarr1) in glucagon-bound and ligand-free states. These structures reveal a receptor tail-engaged binding mode of βarr1 with many unique features, to our knowledge, not previously observed. Helix VIII, instead of the receptor core, has a major role in accommodating βarr1 by forming extensive interactions with the central crest of βarr1. The tail-binding pose is further defined by a close proximity between the βarr1 C-edge and the receptor helical bundle, and stabilized by a phosphoinositide derivative that bridges βarr1 with helices I and VIII of GCGR. Lacking any contact with the arrestin, the receptor core is in an inactive state and loosely binds to glucagon. Further functional studies suggest that the tail conformation of GCGR-βarr governs βarr recruitment at the plasma membrane and endocytosis of GCGR, and provides a molecular basis for the receptor forming a super-complex simultaneously with G protein and βarr to promote sustained signalling within endosomes. These findings extend our knowledge about the arrestin-mediated modulation of GPCR functionalities. | |||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 248.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 170.1 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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-関連構造データ
関連構造データ | ![]() 36607MC ![]() 8jruC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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: 54163.012 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: HA, PROC, GCGR, AVPR2, ADHR, DIR, DIR3, V2R 発現宿主: ![]() ![]() 参照: UniProt: P03435, UniProt: P04070, UniProt: P47871, UniProt: P30518 | ||||||||
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#2: タンパク質・ペプチド | 分子量: 3486.781 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() | ||||||||
#3: 抗体 | 分子量: 69173.891 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #4: 抗体 | | 分子量: 13867.408 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #5: 化合物 | ChemComp-PIO / [( | 研究の焦点であるリガンドがあるか | Y | Has protein modification | 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 | 名称: The glucagon receptor bound to glucagon and beta-arrestin 1 タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 濃度: 6 mg/ml / 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 / 最大 デフォーカス(公称値): 1500 nm / 最小 デフォーカス(公称値): 800 nm |
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) |
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解析
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
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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: 300738 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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