登録情報 データベース : EMDB / ID : EMD-17344 ダウンロードとリンクタイトル Cryo-EM structure of Rhodopsin-Gi bound with antibody fragments scFv16 and Fab79, conformation 1 マップデータ 詳細 試料複合体 : Rhodopsin-Gi-scFv16-Fab79 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 : single-chain Fv 16タンパク質・ペプチド : single-chain Fv 16複合体 : Immunoglobin G heavy chain FAB fragment and Immunoglobin G light chainタンパク質・ペプチド : Immunoglobin G heavy chain FAB fragmentタンパク質・ペプチド : Immunoglobin G light chain 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 / sperm head plasma membrane / rod bipolar cell differentiation / absorption of visible light / opsin binding / The canonical retinoid cycle in rods (twilight vision) / G protein-coupled opsin signaling pathway / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste ... Opsins / VxPx cargo-targeting to cilium / sperm head plasma membrane / rod bipolar cell differentiation / absorption of visible light / opsin binding / The canonical retinoid cycle in rods (twilight vision) / 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 / rod photoreceptor outer segment / cellular response to light stimulus / eye photoreceptor cell development / G protein-coupled receptor complex / Inactivation, recovery and regulation of the phototransduction cascade / thermotaxis / Activation of the phototransduction cascade / outer membrane / detection of temperature stimulus involved in thermoception / 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 / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (z) signalling events / Extra-nuclear estrogen signaling / photoreceptor outer segment membrane / G alpha (s) signalling events / G alpha (q) signalling events / 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 / response to light stimulus / phototransduction, visible light / G-protein alpha-subunit binding / phototransduction / photoreceptor outer segment / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / sperm midpiece / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / visual perception / cellular response to forskolin / regulation of mitotic spindle organization / guanyl-nucleotide exchange factor activity / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / microtubule cytoskeleton organization / centriolar satellite / G-protein beta/gamma-subunit complex binding / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / cell-cell junction / GDP binding / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / intracellular protein localization / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / sensory perception of taste / signaling receptor complex adaptor activity / retina development in camera-type eye 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 / Guanine nucleotide binding protein (G-protein), alpha subunit ... 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 / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / 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 / 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 : 5.2 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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