登録情報 データベース : EMDB / ID : EMD-17343 ダウンロードとリンクタイトル Cryo-EM structure of Rhodopsin-Gi bound to antibody fragment Fab13 マップデータRho-Gi-Fab13 詳細 試料複合体 : Rhodopsin-Gi-Fab13 complex複合体 : Rhodopsin複合体 : Guanine nucleotide-binding protein G(i) subunit alpha-1タンパク質・ペプチド : Guanine nucleotide-binding protein G(i) subunit alpha-1複合体 : Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 and Guanine nucleotide-binding protein G(T) subunit gamma-T1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 G(T) subunit gamma-T1複合体 : Immunoglobin G light chain and Immunoglobin G heavy chain FAB fragmentタンパク質・ペプチド : Immunoglobin G light chainタンパク質・ペプチド : Immunoglobin G heavy chain FAB fragment 詳細 キーワード GPCR / Rhodopsin / G protein / Fab / SIGNALING 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
Opsins / VxPx cargo-targeting to cilium / rod bipolar cell differentiation / sperm head plasma membrane / opsin binding / The canonical retinoid cycle in rods (twilight vision) / absorption of visible light / G protein-coupled opsin signaling pathway / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste ... Opsins / VxPx cargo-targeting to cilium / rod bipolar cell differentiation / sperm head plasma membrane / opsin binding / The canonical retinoid cycle in rods (twilight vision) / absorption of visible light / G protein-coupled opsin signaling pathway / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / 11-cis retinal binding / podosome assembly / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G protein-coupled photoreceptor activity / photoreceptor inner segment membrane / cellular response to light stimulus / rod photoreceptor outer segment / eye photoreceptor cell development / G protein-coupled receptor complex / Inactivation, recovery and regulation of the phototransduction cascade / thermotaxis / Activation of the phototransduction cascade / detection of temperature stimulus involved in thermoception / outer membrane / response to light intensity / photoreceptor cell maintenance / arrestin family protein binding / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G alpha (12/13) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Adrenaline,noradrenaline inhibits insulin secretion / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Ca2+ pathway / G alpha (z) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / Extra-nuclear estrogen signaling / G alpha (s) signalling events / G alpha (q) signalling events / photoreceptor outer segment membrane / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / phototransduction, visible light / phototransduction / response to light stimulus / photoreceptor outer segment / G-protein alpha-subunit binding / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / visual perception / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / guanyl-nucleotide exchange factor activity / cellular response to forskolin / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / Regulation of insulin secretion / neuropeptide signaling pathway / response to prostaglandin E / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / microtubule cytoskeleton organization / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / cell-cell junction / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / GDP binding / intracellular protein localization / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G-protein beta-subunit binding / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway 類似検索 - 分子機能 Rhodopsin, N-terminal / Amino terminal of the G-protein receptor rhodopsin / Rhodopsin / Opsin / Visual pigments (opsins) retinal binding site / Visual pigments (opsins) retinal binding site. / : / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion ... Rhodopsin, N-terminal / Amino terminal of the G-protein receptor rhodopsin / Rhodopsin / Opsin / Visual pigments (opsins) retinal binding site / Visual pigments (opsins) retinal binding site. / : / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / 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. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 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 / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性 Guanine nucleotide-binding protein G(T) subunit gamma-T1 / Rhodopsin / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(i) subunit alpha-1 類似検索 - 構成要素生物種 Bos taurus (ウシ) / Homo sapiens (ヒト) / Mus musculus (ハツカネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.21 Å 詳細 データ登録者Pamula F / Tejero O / Muehle J / Thoma R / Schertler GFX / Marino J / Tsai C-J 資金援助 スイス, European Union, 4件 詳細 詳細を隠すOrganization Grant number 国 Swiss National Science Foundation 173335 スイス Swiss National Science Foundation 153145 スイス Swiss National Science Foundation 192760 スイス European Research Council (ERC) 951644 European Union
引用ジャーナル : Biophys J / 年 : 2025タイトル : Tool antibody fragments reveal multiple conformations of the rhodopsin-Gi signaling complex.著者 : Filip Pamula / Oliver Tejero / Jonas Mühle / Ralf Thoma / Gebhard F X Schertler / Jacopo Marino / Ching-Ju Tsai / 要旨 : Antibody Fab fragments are widely used protein binders that assist in structural studies of G-protein-coupled receptor (GPCR) signaling complexes. Expanding the repertoire of such binders to target ... Antibody Fab fragments are widely used protein binders that assist in structural studies of G-protein-coupled receptor (GPCR) signaling complexes. Expanding the repertoire of such binders to target distinct components of the signaling complex offers opportunities to probe conformational regulation and dynamics. Here, we report the biochemical and cryo-EM characterization of two Fab fragments, Fab79 and Fab13, raised against the rhodopsin-Gαiβγ complex. Fab79 binds to the flexible α-helical domain (AHD) of the Gαi subunit and prevents complex dissociation in the presence of the nonhydrolyzable GTP analog, GTPγS, likely by hindering AHD closure, a step necessary for complex dissociation. In contrast, Fab13 binds rigidly to Gβ without directly contacting Gα or the receptor. These findings show that Fab79 and Fab13 reveal functionally relevant conformational states of G-protein activation and serve as practical tools to stabilize or modulate GPCR signaling complexes. 履歴 登録 2023年5月11日 - ヘッダ(付随情報) 公開 2024年11月20日 - マップ公開 2024年11月20日 - 更新 2025年10月29日 - 現状 2025年10月29日 処理サイト : PDBe / 状態 : 公開
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