+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7t94 | ||||||
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タイトル | Cryo-EM structure of S1 state ACh-bound M2R-Go signaling complex with a PAM | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / GPCR / signaling complex / muscarinic receptor / acetylcholine | ||||||
機能・相同性 | 機能・相同性情報 Muscarinic acetylcholine receptors / symmetric synapse / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / G protein-coupled acetylcholine receptor activity / cholinergic synapse / regulation of smooth muscle contraction / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / arrestin family protein binding ...Muscarinic acetylcholine receptors / symmetric synapse / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / G protein-coupled acetylcholine receptor activity / cholinergic synapse / regulation of smooth muscle contraction / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / arrestin family protein binding / G protein-coupled serotonin receptor activity / vesicle docking involved in exocytosis / G protein-coupled dopamine receptor signaling pathway / regulation of heart contraction / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / asymmetric synapse / negative regulation of insulin secretion / G protein-coupled serotonin receptor binding / axon terminus / muscle contraction / presynaptic modulation of chemical synaptic transmission / locomotory behavior / clathrin-coated endocytic vesicle membrane / response to virus / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / 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 / 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 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / 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 / 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 / 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 / Clathrin-mediated endocytosis / retina development in camera-type eye / presynaptic membrane / nervous system development / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / cell body / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / chemical synaptic transmission / G alpha (q) signalling events / postsynaptic membrane / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / neuronal cell body / glutamatergic synapse / dendrite / synapse / protein-containing complex binding / GTP binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) Mus musculus (ハツカネズミ) | ||||||
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: 3.16 Å | ||||||
データ登録者 | Xu, J. / Wang, Q. / Du, Y. / Kobilka, B.K. | ||||||
資金援助 | 1件
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引用 | ジャーナル: Nat Commun / 年: 2023 タイトル: Structural and dynamic insights into supra-physiological activation and allosteric modulation of a muscarinic acetylcholine receptor. 著者: Jun Xu / Qinggong Wang / Harald Hübner / Yunfei Hu / Xiaogang Niu / Haoqing Wang / Shoji Maeda / Asuka Inoue / Yuyong Tao / Peter Gmeiner / Yang Du / Changwen Jin / Brian K Kobilka / 要旨: The M2 muscarinic receptor (M2R) is a prototypical G-protein-coupled receptor (GPCR) that serves as a model system for understanding GPCR regulation by both orthosteric and allosteric ligands. Here, ...The M2 muscarinic receptor (M2R) is a prototypical G-protein-coupled receptor (GPCR) that serves as a model system for understanding GPCR regulation by both orthosteric and allosteric ligands. Here, we investigate the mechanisms governing M2R signaling versatility using cryo-electron microscopy (cryo-EM) and NMR spectroscopy, focusing on the physiological agonist acetylcholine and a supra-physiological agonist iperoxo, as well as a positive allosteric modulator LY2119620. These studies reveal that acetylcholine stabilizes a more heterogeneous M2R-G-protein complex than iperoxo, where two conformers with distinctive G-protein orientations were determined. We find that LY2119620 increases the affinity for both agonists, but differentially modulates agonists efficacy in G-protein and β-arrestin pathways. Structural and spectroscopic analysis suggest that LY211620 stabilizes distinct intracellular conformational ensembles from agonist-bound M2R, which may enhance β-arrestin recruitment while impairing G-protein activation. These results highlight the role of conformational dynamics in the complex signaling behavior of GPCRs, and could facilitate design of better drugs. | ||||||
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 | 7t94.cif.gz | 244.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7t94.ent.gz | 178.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7t94.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 | 7t94_validation.pdf.gz | 823.2 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7t94_full_validation.pdf.gz | 836.1 KB | 表示 | |
XML形式データ | 7t94_validation.xml.gz | 35.4 KB | 表示 | |
CIF形式データ | 7t94_validation.cif.gz | 54.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/t9/7t94 ftp://data.pdbj.org/pub/pdb/validation_reports/t9/7t94 | HTTPS FTP |
-関連構造データ
-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 BCD
#2: タンパク質 | 分子量: 40104.551 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: GNAO1 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P09471 |
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#3: タンパク質 | 分子量: 37728.152 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 |
#4: 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 / 抗体 , 2種, 2分子 AE
#1: タンパク質 | 分子量: 39729.910 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: CHRM2 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P08172 |
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#5: 抗体 | 分子量: 27340.482 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) |
-非ポリマー , 3種, 3分子
#6: 化合物 | ChemComp-ACH / |
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#7: 化合物 | ChemComp-2CU / |
#8: 水 | ChemComp-HOH / |
-詳細
研究の焦点であるリガンドがあるか | Y |
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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: ACh-bound M2R-GoA-scFv16 complex / タイプ: COMPLEX / Entity ID: #1-#5 / 由来: MULTIPLE SOURCES | ||||||||||||
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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 | 濃度: 2 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 |
-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): 1000 nm |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
CTF補正 | タイプ: NONE |
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3次元再構成 | 解像度: 3.16 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 92571 / 対称性のタイプ: POINT |