登録情報 データベース : EMDB / ID : EMD-48111 ダウンロードとリンクタイトル Human M5 muscarinic acetylcholine receptor complex with mini-Gq and iperoxo マップデータHuman M5 muscarinic acetylcholine receptor complex with mini-Gq and iperoxo 詳細 試料複合体 : Human M5-miniGq-Gb1g2 complexタンパク質・ペプチド : Muscarinic acetylcholine receptor M5タンパク質・ペプチド : Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1タンパク質・ペプチド : Guanine nucleotide-binding protein Gq alpha subunit chimeraタンパク質・ペプチド : Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2リガンド : 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium 詳細 キーワード G protein-coupled receptor / acetylcholine binding / seven transmembrane protein / MEMBRANE PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
regulation of phosphatidylinositol dephosphorylation / gastric acid secretion / Muscarinic acetylcholine receptors / G protein-coupled acetylcholine receptor activity / G protein-coupled serotonin receptor activity / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / dopamine transport / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / G-protein activation / Activation of the phototransduction cascade ... regulation of phosphatidylinositol dephosphorylation / gastric acid secretion / Muscarinic acetylcholine receptors / G protein-coupled acetylcholine receptor activity / G protein-coupled serotonin receptor activity / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / dopamine transport / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / G alpha (i) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / photoreceptor outer segment membrane / spectrin binding / alkylglycerophosphoethanolamine phosphodiesterase activity / transmission of nerve impulse / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / photoreceptor outer segment / cardiac muscle cell apoptotic process / photoreceptor inner segment / 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 / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / 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 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / 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 / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / cell body / positive regulation of cytosolic calcium ion concentration / GTPase binding / Ca2+ pathway / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / cellular response to hypoxia / chemical synaptic transmission / postsynaptic membrane / Extra-nuclear estrogen signaling / cell population proliferation / G protein-coupled receptor signaling pathway / GTPase activity / dendrite / synapse / protein-containing complex binding / extracellular exosome / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能 Muscarinic acetylcholine receptor M5 / Muscarinic acetylcholine receptor family / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein ... Muscarinic acetylcholine receptor M5 / Muscarinic acetylcholine receptor family / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily 類似検索 - ドメイン・相同性 Muscarinic acetylcholine receptor M5 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 類似検索 - 構成要素生物種 Homo sapiens (ヒト) / Rattus norvegicus (ドブネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 2.79 Å 詳細 データ登録者Burger WAC / Mobbs JI / Thal DM 資金援助 オーストラリア, 2件 詳細 詳細を隠すOrganization Grant number 国 National Health and Medical Research Council (NHMRC, Australia) 1196951 オーストラリア Australian Research Council (ARC) LP180100560 オーストラリア
引用ジャーナル : Nat Commun / 年 : 2025タイトル : Cryo-EM reveals an extrahelical allosteric binding site at the M mAChR.著者: Wessel A C Burger / Jesse I Mobbs / Bhavika Rana / Jinan Wang / Keya Joshi / Patrick R Gentry / Mahmuda Yeasmin / Hariprasad Venugopal / Aaron M Bender / Craig W Lindsley / Yinglong Miao / ... 著者 : Wessel A C Burger / Jesse I Mobbs / Bhavika Rana / Jinan Wang / Keya Joshi / Patrick R Gentry / Mahmuda Yeasmin / Hariprasad Venugopal / Aaron M Bender / Craig W Lindsley / Yinglong Miao / Arthur Christopoulos / Celine Valant / David M Thal / 要旨 : The M muscarinic acetylcholine receptor (M mAChR) represents a promising therapeutic target for neurological disorders. However, the high conservation of its orthosteric binding site poses ... The M muscarinic acetylcholine receptor (M mAChR) represents a promising therapeutic target for neurological disorders. However, the high conservation of its orthosteric binding site poses significant challenges for drug development. While selective positive allosteric modulators (PAMs) offer a potential solution, a structural understanding of the M mAChR and its allosteric binding sites remains limited. Here, we present a 2.8 Å cryo-electron microscopy structure of the M mAChR complexed with heterotrimeric G protein and the agonist iperoxo, completing the active-state structural characterization of the mAChR family. To identify the binding site of M-selective PAMs, we implement an integrated approach combining mutagenesis, pharmacological assays, structural biology, and molecular dynamics simulations. Our mutagenesis studies reveal that selective M PAMs bind outside previously characterized M mAChR allosteric sites. Subsequently, we obtain a 2.1 Å structure of M mAChR co-bound with acetylcholine and the selective PAM VU6007678, revealing an allosteric pocket at the extrahelical interface between transmembrane domains 3 and 4 that is confirmed through mutagenesis and simulations. These findings demonstrate the diverse mechanisms of allosteric regulation in mAChRs and highlight the value of integrating pharmacological and structural approaches to identify allosteric binding sites. 履歴 登録 2024年11月30日 - ヘッダ(付随情報) 公開 2025年10月8日 - マップ公開 2025年10月8日 - 更新 2025年10月8日 - 現状 2025年10月8日 処理サイト : RCSB / 状態 : 公開
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