+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8gg4 | |||||||||
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タイトル | CryoEM structure of beta-2-adrenergic receptor in complex with GTP-bound Gs heterotrimer (transition intermediate #10 of 20) | |||||||||
要素 |
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キーワード | SIGNALING PROTEIN / GPCR / Adrenergic / Receptor / G protein | |||||||||
機能・相同性 | 機能・相同性情報 beta2-adrenergic receptor activity / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / positive regulation of mini excitatory postsynaptic potential / positive regulation of cAMP-dependent protein kinase activity / positive regulation of AMPA receptor activity / norepinephrine binding / positive regulation of autophagosome maturation / heat generation / Adrenoceptors / activation of transmembrane receptor protein tyrosine kinase activity ...beta2-adrenergic receptor activity / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / positive regulation of mini excitatory postsynaptic potential / positive regulation of cAMP-dependent protein kinase activity / positive regulation of AMPA receptor activity / norepinephrine binding / positive regulation of autophagosome maturation / heat generation / Adrenoceptors / activation of transmembrane receptor protein tyrosine kinase activity / negative regulation of smooth muscle contraction / positive regulation of lipophagy / negative regulation of multicellular organism growth / negative regulation of G protein-coupled receptor signaling pathway / response to psychosocial stress / endosome to lysosome transport / adrenergic receptor signaling pathway / diet induced thermogenesis / positive regulation of protein kinase A signaling / neuronal dense core vesicle / PKA activation in glucagon signalling / adenylate cyclase binding / hair follicle placode formation / developmental growth / smooth muscle contraction / D1 dopamine receptor binding / intracellular transport / renal water homeostasis / bone resorption / Hedgehog 'off' state / potassium channel regulator activity / positive regulation of bone mineralization / brown fat cell differentiation / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / regulation of sodium ion transport / cellular response to glucagon stimulus / adenylate cyclase activator activity / response to cold / regulation of insulin secretion / receptor-mediated endocytosis / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / clathrin-coated endocytic vesicle membrane / bone development / positive regulation of protein serine/threonine kinase activity / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G protein activity / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / platelet aggregation / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / cognition / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / 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 / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to amyloid-beta / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / sensory perception of smell / G alpha (12/13) signalling events / extracellular vesicle / Cargo recognition for clathrin-mediated endocytosis / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / positive regulation of cold-induced thermogenesis / Clathrin-mediated endocytosis / retina development in camera-type eye / Ca2+ pathway / amyloid-beta binding / phospholipase C-activating G protein-coupled receptor signaling 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: 3.2 Å | |||||||||
データ登録者 | Papasergi-Scott, M.M. / Skiniotis, G. | |||||||||
資金援助 | 米国, 2件
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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
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8gg4.cif.gz | 195.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8gg4.ent.gz | 142.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8gg4.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 | 8gg4_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8gg4_full_validation.pdf.gz | 1.5 MB | 表示 | |
XML形式データ | 8gg4_validation.xml.gz | 41.1 KB | 表示 | |
CIF形式データ | 8gg4_validation.cif.gz | 60.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/gg/8gg4 ftp://data.pdbj.org/pub/pdb/validation_reports/gg/8gg4 | HTTPS FTP |
-関連構造データ
関連構造データ | 29994MC 8gdzC 8ge1C 8ge2C 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 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 (文献) |
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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
-集合体
登録構造単位 |
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1 |
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-要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
#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 |
-タンパク質 , 1種, 1分子 R
#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 |
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-非ポリマー , 3種, 6分子
#5: 化合物 | ChemComp-GTP / |
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#6: 化合物 | ChemComp-G1I / ( |
#7: 水 | ChemComp-HOH / |
-詳細
研究の焦点であるリガンドがあるか | N |
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-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 |
-試料調製
構成要素 | 名称: Complex of beta-2 adrenergic receptor and Gs heterotrimer with GTP タイプ: COMPLEX 詳細: Combined datasets of the protein complex from samples plunge frozen at 5 sec, 10 sec, or 17 sec after GTP addition to the sample. Entity ID: #1-#4 / 由来: MULTIPLE SOURCES | ||||||||||||
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分子量 | 実験値: NO | ||||||||||||
由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||
由来(組換発現) |
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緩衝液 | pH: 7.5 詳細: GTP was added just prior to freezing at 5 sec, 10 sec, or 17 sec before plunging. | ||||||||||||
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: UltrAuFoil R1.2/1.3 | ||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K 詳細: GTP was added just prior to freezing at 5 sec, 10 sec, or 17 sec before plunging. |
-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: 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): 2000 nm / 最小 デフォーカス(公称値): 400 nm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 50 e/Å2 / 検出モード: COUNTING / フィルム・検出器のモデル: GATAN K3 (6k x 4k) 詳細: The map is the result of combining multiple datasets: cryo-EM imaging of the beta-2AR-Gs + GTP (5 sec) complex was performed on a Titan Krios electron microscope equipped with a K3 Summit ...詳細: The map is the result of combining multiple datasets: cryo-EM imaging of the beta-2AR-Gs + GTP (5 sec) complex was performed on a Titan Krios electron microscope equipped with a K3 Summit direct electron detector (Gatan). The microscope was operated at 300 kV accelerating voltage, with a nominal magnification of 105,000x in counting mode resulting in a magnified pixel size of 0.8677 Angstrom. A total exposure of 60.48 electrons/ Angstrom^2 over 63 frames with defocus ranging from -1.0 - -2.0 micrometers was used. Cryo-EM imaging of beta-2AR-Gs + GTP (10 sec) complex was performed on four separate grids over three collection sessions. The microscope was operated at 300 kV accelerating voltage, with a magnification at the camera of 58,679x in counting mode resulting in a magnified pixel size of 0.8521 Angstrom. For the first and second grids, movies were obtained at an exposure rate of 21.13 electrons/Angstrum^2/sec with defocus ranging from -0.4 - -2.0 micrometers. The total exposure time was 2.717 sec over 77 frames per movie stack. For an additional collection of the first grid, movies were obtained at an exposure rate of 20.95 electrons/ Angstrum^2/sec with defocus ranging from -0.4 -2.0 micrometers. The total exposure time was 2.717 sec over 77 frames per movie stack. For the third and fourth grids, movies were obtained at an exposure rate of 30.71 electrons/ Angstrum^2/sec with defocus ranging from -0.5 - -1.6 micrometers. The total exposure time was 2.008 sec over 79 frames per movie stack. Cryo-EM imaging of beta-2AR-Gs + GTP (17 sec) was performed on a Titan Krios equipped with a post-column energy filter, with a magnification of 105,000x in counting mode resulting in a magnified pixel size of 0.8677 Angstrom. Movies were obtained at an exposure rate of 32.46 electrons/Angstrum^2/sec with defocus ranging from -0.4 - -0.9 micrometers. The total exposure time was 1.999 sec over 79 frames per movie stack. |
-解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 19918625 | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 255657 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
拘束条件 |
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