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- 基本情報
基本情報
| 登録情報 | データベース: PDB / ID: 8ge2 | ||||||
|---|---|---|---|---|---|---|---|
| タイトル | CryoEM structure of beta-2-adrenergic receptor in complex with nucleotide-free Gs heterotrimer (#3 of 20) | ||||||
|  要素 | 
 | ||||||
|  キーワード | SIGNALING PROTEIN / GPCR / Adrenergic / Receptor / G protein | ||||||
| 機能・相同性 |  機能・相同性情報 positive regulation of mini excitatory postsynaptic potential / beta2-adrenergic receptor activity / negative regulation of smooth muscle contraction / AMPA selective glutamate receptor signaling pathway / positive regulation of autophagosome maturation / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / heat generation / norepinephrine binding / Adrenoceptors / positive regulation of lipophagy ...positive regulation of mini excitatory postsynaptic potential / beta2-adrenergic receptor activity / negative regulation of smooth muscle contraction / AMPA selective glutamate receptor signaling pathway / positive regulation of autophagosome maturation / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / heat generation / norepinephrine binding / Adrenoceptors / positive regulation of lipophagy / negative regulation of multicellular organism growth / negative regulation of G protein-coupled receptor signaling pathway / endosome to lysosome transport / adrenergic receptor signaling pathway / response to psychosocial stress / diet induced thermogenesis / positive regulation of cAMP/PKA signal transduction / adenylate cyclase binding / smooth muscle contraction / PKA activation in glucagon signalling / developmental growth / hair follicle placode formation / bone resorption / D1 dopamine receptor binding / potassium channel regulator activity / positive regulation of bone mineralization / neuronal dense core vesicle / intracellular transport / brown fat cell differentiation / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / activation of adenylate cyclase activity / Hedgehog 'off' state / intercellular bridge / regulation of sodium ion transport / adenylate cyclase-activating adrenergic receptor signaling pathway / cellular response to glucagon stimulus / regulation of insulin secretion / receptor-mediated endocytosis / response to cold / adenylate cyclase activator activity / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / clathrin-coated endocytic vesicle membrane / bone development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / platelet aggregation / cognition / 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 / Activation of G protein gated Potassium channels / Inhibition  of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / cellular response to amyloid-beta / 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 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / mitotic spindle / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / sensory perception of smell / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / Cargo recognition for clathrin-mediated endocytosis / 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) / Clathrin-mediated endocytosis / positive regulation of cold-induced thermogenesis / amyloid-beta binding / retina development in camera-type eye / G protein activity / microtubule cytoskeleton / GTPase binding / Ca2+ pathway 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: 3.3 Å | ||||||
|  データ登録者 | Papasergi-Scott, M.M. / Skiniotis, G. | ||||||
| 資金援助 |  米国, 1件 
 | ||||||
|  引用 |  ジャーナル: Nature / 年: 2024 タイトル: Time-resolved cryo-EM of G-protein activation by a GPCR. 著者: Makaía M Papasergi-Scott / Guillermo Pérez-Hernández / Hossein Batebi / Yang Gao / Gözde Eskici / Alpay B Seven / Ouliana Panova / Daniel Hilger / Marina Casiraghi / Feng He / Luis Maul / ...著者: Makaía M Papasergi-Scott / Guillermo Pérez-Hernández / Hossein Batebi / Yang Gao / Gözde Eskici / Alpay B Seven / Ouliana Panova / Daniel Hilger / Marina Casiraghi / Feng He / Luis Maul / Peter Gmeiner / Brian K Kobilka / Peter W Hildebrand / Georgios Skiniotis /      要旨: G-protein-coupled receptors (GPCRs) activate heterotrimeric G proteins by stimulating guanine nucleotide exchange in the Gα subunit. To visualize this mechanism, we developed a time-resolved cryo-EM ...G-protein-coupled receptors (GPCRs) activate heterotrimeric G proteins by stimulating guanine nucleotide exchange in the Gα subunit. To visualize this mechanism, we developed a time-resolved cryo-EM approach that examines the progression of ensembles of pre-steady-state intermediates of a GPCR-G-protein complex. By monitoring the transitions of the stimulatory G protein in complex with the β-adrenergic receptor at short sequential time points after GTP addition, we identified the conformational trajectory underlying G-protein activation and functional dissociation from the receptor. Twenty structures generated from sequential overlapping particle subsets along this trajectory, compared to control structures, provide a high-resolution description of the order of main events driving G-protein activation in response to GTP binding. Structural changes propagate from the nucleotide-binding pocket and extend through the GTPase domain, enacting alterations to Gα switch regions and the α5 helix that weaken the G-protein-receptor interface. Molecular dynamics simulations with late structures in the cryo-EM trajectory support that enhanced ordering of GTP on closure of the α-helical domain against the nucleotide-bound Ras-homology domain correlates with α5 helix destabilization and eventual dissociation of the G protein from the GPCR. These findings also highlight the potential of time-resolved cryo-EM as a tool for mechanistic dissection of GPCR signalling events. | ||||||
| 履歴 | 
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- 構造の表示
構造の表示
| 構造ビューア | 分子:  Molmil  Jmol/JSmol | 
|---|
- ダウンロードとリンク
ダウンロードとリンク
- ダウンロード
ダウンロード
| PDBx/mmCIF形式 |  8ge2.cif.gz | 189.6 KB | 表示 |  PDBx/mmCIF形式 | 
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| PDB形式 |  pdb8ge2.ent.gz | 137.2 KB | 表示 |  PDB形式 | 
| PDBx/mmJSON形式 |  8ge2.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 |  8ge2_validation.pdf.gz | 1.6 MB | 表示 |  wwPDB検証レポート | 
|---|---|---|---|---|
| 文書・詳細版 |  8ge2_full_validation.pdf.gz | 1.6 MB | 表示 | |
| XML形式データ |  8ge2_validation.xml.gz | 40.2 KB | 表示 | |
| CIF形式データ |  8ge2_validation.cif.gz | 59.6 KB | 表示 | |
| アーカイブディレクトリ |  https://data.pdbj.org/pub/pdb/validation_reports/ge/8ge2  ftp://data.pdbj.org/pub/pdb/validation_reports/ge/8ge2 | HTTPS FTP | 
-関連構造データ
| 関連構造データ |  29953MC  8gdzC  8ge1C  8ge3C  8ge4C  8ge5C  8ge6C  8ge7C  8ge8C  8ge9C  8geaC  8gebC  8gecC  8gedC  8geeC  8gefC  8gegC  8gehC  8geiC  8gejC  8gfvC  8gfwC  8gfxC  8gfyC  8gfzC  8gg0C  8gg1C  8gg2C  8gg3C  8gg4C  8gg5C  8gg6C  8gg7C  8gg8C  8gg9C  8ggaC  8ggbC  8ggcC  8ggeC  8ggfC  8ggiC  8ggjC  8ggkC  8gglC  8ggmC  8ggnC  8ggoC  8ggpC  8ggqC  8ggrC  8ggsC  8ggtC  8gguC  8ggvC  8ggwC  8ggxC  8ggyC  8ggzC  8gh0C  8gh1C  8unlC  8unmC  8unnC  8unoC  8unpC  8unqC  8unrC  8unsC  8untC  8unuC  8unvC  8unwC  8unxC  8unyC  8unzC  8uo0C  8uo1C  8uo2C  8uo3C  8uo4C 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  F&H 検索 | 
- リンク
リンク
- 集合体
集合体
| 登録構造単位 |  
 | 
|---|---|
| 1 | 
 | 
- 要素
要素
| #1: タンパク質 | 分子量: 44326.160 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現)   Homo sapiens (ヒト) / 遺伝子: GNAS, GNAS1, GSP / 発現宿主:  Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P63092 | 
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| #2: タンパク質 | 分子量: 37573.988 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現)   Homo sapiens (ヒト) / 遺伝子: GNB1 / 発現宿主:  Trichoplusia ni (イラクサキンウワバ) / 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)   Homo sapiens (ヒト) / 遺伝子: GNG2 / 発現宿主:  Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P59768 | 
| #4: タンパク質 | 分子量: 51767.242 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現)   Homo sapiens (ヒト) / 遺伝子: ADRB2, ADRB2R, B2AR 発現宿主:   Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P07550 | 
| #5: 化合物 | ChemComp-G1I / ( | 
| 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 | 
|---|---|
| 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
試料調製
| 構成要素 | 名称: Complex of beta-2 adrenergic receptor and Gs G protein heterotrimer タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES | 
|---|---|
| 分子量 | 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 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | 
| 試料支持 | グリッドのタイプ: Quantifoil R1.2/1.3 | 
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE | 
- 電子顕微鏡撮影
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: FLOOD BEAM | 
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1200 nm | 
| 撮影 | 電子線照射量: 52 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) | 
- 解析
解析
| EMソフトウェア | 
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| CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||
| 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: 44076 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 | 
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