登録情報 データベース : EMDB / ID : EMD-33587 ダウンロードとリンクタイトル Cryo-EM structure of the SST-14-bound SSTR2-miniGq-scFv16 complex マップデータ 詳細 試料複合体 : Complex of SSTR2-miniGq-scFv16 bound with SST-14複合体 : G(I)/G(S)/G(T) subunit beta-1, G(I)/G(S)/G(O) subunit gamma-2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(I)/G(S)/G(O) subunit gamma-2複合体 : G(q) subunit alpha, SSTR2, svFv16タンパク質・ペプチド : Engineered Guanine nucleotide-binding protein G(q) subunit alphaタンパク質・ペプチド : Somatostatin receptor type 2タンパク質・ペプチド : single Fab chain (svFv16)複合体 : SST-14タンパク質・ペプチド : somatostatin-14リガンド : CHOLESTEROL 詳細 キーワード somatostatin receptor / G protein / biased ligand / GPCR / STRUCTURAL 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
somatostatin receptor activity / peristalsis / neuropeptide binding / cellular response to glucocorticoid stimulus / response to starvation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / forebrain development / cerebellum development / Peptide ligand-binding receptors ... somatostatin receptor activity / peristalsis / neuropeptide binding / cellular response to glucocorticoid stimulus / response to starvation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / forebrain development / cerebellum development / Peptide ligand-binding receptors / PDZ domain binding / cellular response to estradiol stimulus / adenylate cyclase-inhibiting 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 / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / 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 / Inactivation, recovery and regulation of the phototransduction cascade / 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 / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / Ca2+ pathway / retina development in camera-type eye / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / spermatogenesis / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / neuron projection / G protein-coupled receptor signaling pathway / lysosomal membrane / negative regulation of cell population proliferation / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 Somatostatin receptor 2 / Somatostatin receptor family / Serpentine type 7TM GPCR chemoreceptor Srsx / 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 ... Somatostatin receptor 2 / Somatostatin receptor family / Serpentine type 7TM GPCR chemoreceptor Srsx / 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 / 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. / WD domain, G-beta repeat / 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 Somatostatin receptor type 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 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.48 Å 詳細 データ登録者Chen S / Zheng S 資金援助 中国, 1件 詳細 詳細を隠すOrganization Grant number 国 Ministry of Science and Technology (MoST, China) 中国
引用ジャーナル : Nat Chem Biol / 年 : 2023タイトル : Molecular basis for the selective G protein signaling of somatostatin receptors.著者 : Sijia Chen / Xiao Teng / Sanduo Zheng / 要旨 : G protein-coupled receptors (GPCRs) modulate every aspect of physiological functions mainly through activating heterotrimeric G proteins. A majority of GPCRs promiscuously couple to multiple G ... G protein-coupled receptors (GPCRs) modulate every aspect of physiological functions mainly through activating heterotrimeric G proteins. A majority of GPCRs promiscuously couple to multiple G protein subtypes. Here we validate that in addition to the well-known G pathway, somatostatin receptor 2 and 5 (SSTR2 and SSTR5) couple to the G pathway and show that smaller ligands preferentially activate the G pathway. We further determined cryo-electron microscopy structures of the SSTR2‒G and SSTR2‒G complexes bound to octreotide and SST-14. Structural and functional analysis revealed that G protein selectivity of SSTRs is not only determined by structural elements in the receptor-G protein interface, but also by the conformation of the agonist-binding pocket. Accordingly, smaller ligands fail to stabilize a broader agonist-binding pocket of SSTRs that is required for efficient G coupling but not G coupling. Our studies facilitate the design of drugs with selective G protein signaling to improve therapeutic efficacy. 履歴 登録 2022年6月9日 - ヘッダ(付随情報) 公開 2022年10月19日 - マップ公開 2022年10月19日 - 更新 2024年11月6日 - 現状 2024年11月6日 処理サイト : PDBj / 状態 : 公開
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