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: Guanine nucleotide-binding protein G(i) subunit alpha-2
タンパク質・ペプチド: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
複合体: scFv16
タンパク質・ペプチド: scFv16
キーワード
human relaxin family peptide receptor 3 / G protein-coupled receptor / ligand recognition / STRUCTURAL PROTEIN / STRUCTURAL PROTEN-IMMUNE SYSTEM complex
機能・相同性
機能・相同性情報
Relaxin receptors / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / negative regulation of calcium ion-dependent exocytosis / G protein-coupled adenosine receptor signaling pathway / negative regulation of adenylate cyclase activity / positive regulation of urine volume / positive regulation of neural precursor cell proliferation / negative regulation of synaptic transmission / G protein-coupled peptide receptor activity / gamma-aminobutyric acid signaling pathway ...Relaxin receptors / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / negative regulation of calcium ion-dependent exocytosis / G protein-coupled adenosine receptor signaling pathway / negative regulation of adenylate cyclase activity / positive regulation of urine volume / positive regulation of neural precursor cell proliferation / negative regulation of synaptic transmission / G protein-coupled peptide receptor activity / gamma-aminobutyric acid signaling pathway / positive regulation of cytokinesis / regulation of calcium ion transport / negative regulation of apoptotic signaling pathway / neuropeptide signaling pathway / neuronal dense core vesicle / Adenylate cyclase inhibitory pathway / positive regulation of superoxide anion generation / positive regulation of vascular associated smooth muscle cell proliferation / response to nutrient / hippocampal mossy fiber to CA3 synapse / Regulation of insulin secretion / G protein-coupled receptor activity / electron transport chain / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / hormone activity / G-protein beta/gamma-subunit complex binding / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / 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 / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / 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) / retina development in camera-type eye / cell body / GTPase binding / Ca2+ pathway / midbody / 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 / G alpha (q) signalling events / Ras protein signal transduction / periplasmic space / electron transfer activity / Extra-nuclear estrogen signaling / cell population proliferation / positive regulation of ERK1 and ERK2 cascade / ciliary basal body / positive regulation of cell migration / G protein-coupled receptor signaling pathway / iron ion binding / lysosomal membrane / cell division / GTPase activity / positive regulation of cell population proliferation / heme binding / dendrite / synapse / centrosome / GTP binding / protein-containing complex binding / signal transduction / extracellular exosome / extracellular region 類似検索 - 分子機能
: / : / Insulin family / Insulin-like / Insulin/IGF/Relaxin family / Insulin / insulin-like growth factor / relaxin family. / Insulin, conserved site / Insulin family signature. / Insulin-like superfamily / Cytochrome b562 ...: / : / Insulin family / Insulin-like / Insulin/IGF/Relaxin family / Insulin / insulin-like growth factor / relaxin family. / Insulin, conserved site / Insulin family signature. / Insulin-like superfamily / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / G-protein alpha subunit, group I / 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 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
National Natural Science Foundation of China (NSFC)
21704064
中国
National Natural Science Foundation of China (NSFC)
82073904
中国
National Natural Science Foundation of China (NSFC)
82121005
中国
引用
ジャーナル: Commun Biol / 年: 2025 タイトル: Molecular mechanism underlying non-discriminatory recognition of relaxin-3 by RXFP3 and RXFP4. 著者: Yan Chen / Qingtong Zhou / Shiyu Yan / Jiahui Yan / Dehua Yang / Jian Chen / Ming-Wei Wang / 要旨: The human relaxin family peptide receptors RXFP3 and RXFP4 play important physiological roles through interactions with endogenous hormones, relaxin-3 and insulin-like peptide 5 (INSL5). They are ...The human relaxin family peptide receptors RXFP3 and RXFP4 play important physiological roles through interactions with endogenous hormones, relaxin-3 and insulin-like peptide 5 (INSL5). They are implicated in certain neurological and metabolic disorders. While INSL5 only activates RXFP4, relaxin-3 is recognized by both receptors. Here, we report the cryo-electron microscopy structures of RXFP3-G complexes bound by relaxin-3 or a small-molecule dual agonist (compound 4), and relaxin-3 in complex with RXFP4-G, with global resolutions of 2.91 Å, 2.95 Å, and 3.10 Å, respectively. It is found that relaxin-3 adopts a conserved binding conformation within the transmembrane domain (TMD) bundle of RXFP3 and RXFP4, where the C-terminal tip residues of its B chain, R26 and W27, make extensive contacts with conserved receptor residues, thereby activating RXFP3 and RXFP4. Compound 4 mimics these key interactions by binding to both receptors. In contrast, the C-terminal residues composition and TMD-binding angle of INSL5 in RXFP4 differ significantly from that of relaxin-3, ensuring its selectivity for RXFP4. These findings deepen our understanding about the structural basis of ligand recognition and selectivity in this G protein-coupled receptor subfamily.
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: Guanine nucleotide-binding protein G(i) subunit alpha-2
タンパク質・ペプチド: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
複合体: scFv16
タンパク質・ペプチド: scFv16
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超分子 #1: Cryo-EM structure of the human relaxin family peptide receptor 3 ...
超分子
名称: Cryo-EM structure of the human relaxin family peptide receptor 3 in complex with relaxin-3 and G protein タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all