登録情報 データベース : PDB / ID : 7eb2 構造の表示 ダウンロードとリンクタイトル Cryo-EM structure of human GABA(B) receptor-Gi protein complex 要素(Gamma-aminobutyric acid type B receptor subunit ...) x 2 (Guanine nucleotide-binding protein ...) x 3 ScFv16 詳細キーワード MEMBRANE PROTEIN / GABAB / Cryo-EM / GPCR / Gi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
negative regulation of gamma-aminobutyric acid secretion / GABA B receptor activation / : / neuron-glial cell signaling / G protein-coupled receptor heterodimeric complex / : / G protein-coupled GABA receptor activity / negative regulation of dopamine secretion / negative regulation of epinephrine secretion / positive regulation of growth hormone secretion ... negative regulation of gamma-aminobutyric acid secretion / GABA B receptor activation / : / neuron-glial cell signaling / G protein-coupled receptor heterodimeric complex / : / G protein-coupled GABA receptor activity / negative regulation of dopamine secretion / negative regulation of epinephrine secretion / positive regulation of growth hormone secretion / extracellular matrix protein binding / negative regulation of adenylate cyclase activity / GABA receptor complex / negative regulation of synaptic transmission / Class C/3 (Metabotropic glutamate/pheromone receptors) / synaptic transmission, GABAergic / gamma-aminobutyric acid signaling pathway / positive regulation of glutamate secretion / axolemma / regulation of eating behavior / adenylate cyclase inhibitor activity / T cell migration / positive regulation of protein localization to cell cortex / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / dendritic shaft / mast cell degranulation / chemokine-mediated signaling pathway / response to nicotine / neuropeptide signaling pathway / Regulation of insulin secretion / response to prostaglandin E / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / response to peptide hormone / Schaffer collateral - CA1 synapse / GABA-ergic synapse / osteoblast differentiation / mitochondrial membrane / G-protein beta/gamma-subunit complex binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / GDP binding / photoreceptor disc membrane / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / Adrenaline,noradrenaline inhibits insulin secretion / transmembrane signaling receptor activity / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / G beta:gamma signalling through PI3Kgamma / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / synaptic vesicle / GPER1 signaling / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / G alpha (12/13) signalling events / G-protein beta-subunit binding / extracellular vesicle / Thrombin signalling through proteinase activated receptors (PARs) / adenylate cyclase-activating G protein-coupled receptor signaling pathway / signaling receptor complex adaptor activity / ciliary basal body / GTPase binding / midbody / G protein activity / presynaptic membrane / chemical synaptic transmission / Ca2+ pathway / cell cortex / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / dendritic spine / G alpha (s) signalling events 類似検索 - 分子機能 GPCR family 3, gamma-aminobutyric acid receptor, type B2 / Gamma-aminobutyric acid type B receptor subunit 2, coiled-coil domain / Gamma-aminobutyric acid type B receptor subunit 2 coiled-coil domain / GPCR family 3, gamma-aminobutyric acid receptor, type B1 / GPCR family 3, GABA-B receptor / GI Alpha 1, domain 2-like / GI Alpha 1, domain 2-like / G-protein coupled receptors family 3 signature 3. / GPCR, family 3, conserved site / GPCR, family 3 ... GPCR family 3, gamma-aminobutyric acid receptor, type B2 / Gamma-aminobutyric acid type B receptor subunit 2, coiled-coil domain / Gamma-aminobutyric acid type B receptor subunit 2 coiled-coil domain / GPCR family 3, gamma-aminobutyric acid receptor, type B1 / GPCR family 3, GABA-B receptor / GI Alpha 1, domain 2-like / GI Alpha 1, domain 2-like / G-protein coupled receptors family 3 signature 3. / GPCR, family 3, conserved site / GPCR, family 3 / G-protein coupled receptors family 3 profile. / GPCR family 3, C-terminal / 7 transmembrane sweet-taste receptor of 3 GCPR / Sushi repeat (SCR repeat) / Domain abundant in complement control proteins; SUSHI repeat; short complement-like repeat (SCR) / Sushi/SCR/CCP domain / Sushi/CCP/SCR domain profile. / Sushi/SCR/CCP superfamily / YVTN repeat-like/Quinoprotein amine dehydrogenase / G-protein alpha subunit, group I / 7 Propeller / Methylamine Dehydrogenase; Chain H / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I / 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 / WD domain, G-beta repeat / 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 / Orthogonal Bundle / Mainly Beta / Mainly Alpha 類似検索 - ドメイン・相同性 baclofen / Chem-FN0 / Gamma-aminobutyric acid type B receptor subunit 2 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(i) subunit alpha-1 / Gamma-aminobutyric acid type B receptor subunit 1 類似検索 - 構成要素生物種 Homo sapiens (ヒト)synthetic construct (人工物) 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 : 3.5 Å 詳細データ登録者 Shen, C. / Mao, C. / Xu, C. / Jin, N. / Zhang, H. / Shen, D. / Shen, Q. / Wang, X. / Hou, T. / Rondard, P. ...Shen, C. / Mao, C. / Xu, C. / Jin, N. / Zhang, H. / Shen, D. / Shen, Q. / Wang, X. / Hou, T. / Rondard, P. / Chen, Z. / Pin, J. / Zhang, Y. / Liu, J. 引用ジャーナル : Nature / 年 : 2021タイトル : Structural basis of GABA receptor-G protein coupling.著者 : Cangsong Shen / Chunyou Mao / Chanjuan Xu / Nan Jin / Huibing Zhang / Dan-Dan Shen / Qingya Shen / Xiaomei Wang / Tingjun Hou / Zhong Chen / Philippe Rondard / Jean-Philippe Pin / Yan Zhang / Jianfeng Liu / 要旨 : G-protein-coupled receptors (GPCRs) have central roles in intercellular communication. Structural studies have revealed how GPCRs can activate G proteins. However, whether this mechanism is ... G-protein-coupled receptors (GPCRs) have central roles in intercellular communication. Structural studies have revealed how GPCRs can activate G proteins. However, whether this mechanism is conserved among all classes of GPCR remains unknown. Here we report the structure of the class-C heterodimeric GABA receptor, which is activated by the inhibitory transmitter GABA, in its active form complexed with G protein. We found that a single G protein interacts with the GB2 subunit of the GABA receptor at a site that mainly involves intracellular loop 2 on the side of the transmembrane domain. This is in contrast to the G protein binding in a central cavity, as has been observed with other classes of GPCR. This binding mode results from the active form of the transmembrane domain of this GABA receptor being different from that of other GPCRs, as it shows no outside movement of transmembrane helix 6. Our work also provides details of the inter- and intra-subunit changes that link agonist binding to G-protein activation in this heterodimeric complex. 履歴 登録 2021年3月8日 登録サイト : PDBJ / 処理サイト : PDBJ改定 1.0 2021年5月5日 Provider : repository / タイプ : Initial release改定 1.1 2021年5月12日 Group : Database references / カテゴリ : citation / citation_authorItem : _citation.pdbx_database_id_PubMed / _citation.title ... _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name 改定 1.2 2021年7月7日 Group : Database references / カテゴリ : citationItem : _citation.journal_volume / _citation.page_first / _citation.page_last改定 1.3 2024年10月23日 Group : Data collection / Database references ... Data collection / Database references / Refinement description / Structure summary カテゴリ : chem_comp_atom / chem_comp_bond ... chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature Item : _database_2.pdbx_DOI / _database_2.pdbx_database_accession ... _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update / _pdbx_entry_details.has_protein_modification
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