登録情報 データベース : EMDB / ID : EMD-46571 ダウンロードとリンクタイトル CryoEM structure of PAR1 with endogenous tethered ligand マップデータ 詳細 試料複合体 : Complex of PAR1 with G proteinsタンパク質・ペプチド : Proteinase-activated receptor 1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タンパク質・ペプチド : scFv16タンパク質・ペプチド : Guanine nucleotide-binding protein G(q) subunit alpha chimera 詳細 キーワード PAR2 / endogenous ligand. / IMMUNE SYSTEM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 renin secretion into blood stream / dendritic cell homeostasis / trans-synaptic signaling by endocannabinoid, modulating synaptic transmission / establishment of synaptic specificity at neuromuscular junction / platelet dense tubular network / thrombin-activated receptor activity / regulation of interleukin-1 beta production / connective tissue replacement involved in inflammatory response wound healing / platelet dense granule organization / cell-cell junction maintenance ... negative regulation of renin secretion into blood stream / dendritic cell homeostasis / trans-synaptic signaling by endocannabinoid, modulating synaptic transmission / establishment of synaptic specificity at neuromuscular junction / platelet dense tubular network / thrombin-activated receptor activity / regulation of interleukin-1 beta production / connective tissue replacement involved in inflammatory response wound healing / platelet dense granule organization / cell-cell junction maintenance / positive regulation of smooth muscle contraction / positive regulation of calcium ion transport / negative regulation of glomerular filtration / thrombin-activated receptor signaling pathway / positive regulation of Rho protein signal transduction / regulation of blood coagulation / positive regulation of collagen biosynthetic process / anatomical structure morphogenesis / positive regulation of blood coagulation / G-protein alpha-subunit binding / Common Pathway of Fibrin Clot Formation / positive regulation of vasoconstriction / release of sequestered calcium ion into cytosol / homeostasis of number of cells within a tissue / Peptide ligand-binding receptors / positive regulation of release of sequestered calcium ion into cytosol / positive regulation of interleukin-8 production / positive regulation of receptor signaling pathway via JAK-STAT / G protein-coupled receptor activity / neuromuscular junction / regulation of synaptic plasticity / platelet activation / caveola / positive regulation of interleukin-6 production / response to wounding / 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 / late endosome / 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) / positive regulation of cytosolic calcium ion concentration / GTPase binding / retina development in camera-type eye / 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 / response to lipopolysaccharide / G alpha (q) signalling events / negative regulation of neuron apoptotic process / Ras protein signal transduction / postsynaptic membrane / early endosome / Extra-nuclear estrogen signaling / positive regulation of canonical NF-kappaB signal transduction / cell population proliferation / positive regulation of ERK1 and ERK2 cascade / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of MAPK cascade / positive regulation of cell migration / positive regulation of apoptotic process / G protein-coupled receptor signaling pathway / inflammatory response / signaling receptor binding 類似検索 - 分子機能 Thrombin receptor / Protease-activated receptor / 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 ... Thrombin receptor / Protease-activated receptor / 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 / WD domain, G-beta 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 Proteinase-activated receptor 1 / 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) / 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 : 2.74 Å 詳細 データ登録者Lyu X / Lyu Z / McGrath AP / Kang Y 資金援助 1件 詳細 詳細を隠すOrganization Grant number 国 Not funded
引用ジャーナル : Nat Commun / 年 : 2025タイトル : Structural basis for the activation of proteinase-activated receptors PAR1 and PAR2.著者 : Zongyang Lyu / Xiaoxuan Lyu / Andrey G Malyutin / Guliang Xia / Daniel Carney / Vinicius M Alves / Matthew Falk / Nidhi Arora / Hua Zou / Aaron P McGrath / Yanyong Kang / 要旨 : Members of the proteinase-activated receptor (PAR) subfamily of G protein-coupled receptors (GPCRs) play critical roles in processes like hemostasis, thrombosis, development, wound healing, ... Members of the proteinase-activated receptor (PAR) subfamily of G protein-coupled receptors (GPCRs) play critical roles in processes like hemostasis, thrombosis, development, wound healing, inflammation, and cancer progression. Comprising PAR1-PAR4, these receptors are specifically activated by protease cleavage at their extracellular amino terminus, revealing a 'tethered ligand' that self-activates the receptor. This triggers complex intracellular signaling via G proteins and beta-arrestins, linking external protease signals to cellular functions. To date, direct structural visualization of these ligand-receptor complexes has been limited. Here, we present structural snapshots of activated PAR1 and PAR2 bound to their endogenous tethered ligands, revealing a shallow and constricted orthosteric binding pocket. Comparisons with antagonist-bound structures show minimal conformational changes in the TM6 helix and larger movements of TM7 upon activation. These findings reveal a common activation mechanism for PAR1 and PAR2, highlighting critical residues involved in ligand recognition. Additionally, the structure of PAR2 bound to a pathway selective antagonist, GB88, demonstrates how potent orthosteric engagement can be achieved by a small molecule mimicking the endogenous tethered ligand's interactions. 履歴 登録 2024年8月13日 - ヘッダ(付随情報) 公開 2025年5月7日 - マップ公開 2025年5月7日 - 更新 2025年5月14日 - 現状 2025年5月14日 処理サイト : RCSB / 状態 : 公開
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