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- PDB-8hcx: Cryo-EM structure of Endothelin1-bound ETBR-Gq complex -

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Basic information

Entry
Database: PDB / ID: 8hcx
TitleCryo-EM structure of Endothelin1-bound ETBR-Gq complex
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
  • Endothelin-1
  • scFv16
KeywordsMEMBRANE PROTEIN / ET1 / ETAR / Gq / scFv16
Function / homology
Function and homology information


enteric smooth muscle cell differentiation / chordate pharynx development / response to endothelin / aldosterone metabolic process / negative regulation of neuron maturation / endothelin A receptor binding / negative regulation of phospholipase C/protein kinase C signal transduction / endothelin receptor activity / peptide hormone secretion / endothelin B receptor binding ...enteric smooth muscle cell differentiation / chordate pharynx development / response to endothelin / aldosterone metabolic process / negative regulation of neuron maturation / endothelin A receptor binding / negative regulation of phospholipase C/protein kinase C signal transduction / endothelin receptor activity / peptide hormone secretion / endothelin B receptor binding / cellular response to human chorionic gonadotropin stimulus / Oplophorus-luciferin 2-monooxygenase / Oplophorus-luciferin 2-monooxygenase activity / meiotic cell cycle process involved in oocyte maturation / glomerular endothelium development / positive regulation of artery morphogenesis / neural crest cell fate commitment / regulation of fever generation / vein smooth muscle contraction / response to prostaglandin F / sympathetic neuron axon guidance / noradrenergic neuron differentiation / positive regulation of odontogenesis / histamine secretion / positive regulation of penile erection / positive regulation of chemokine-mediated signaling pathway / maternal process involved in parturition / leukocyte activation / rough endoplasmic reticulum lumen / developmental pigmentation / positive regulation of sarcomere organization / pharyngeal arch artery morphogenesis / podocyte differentiation / epithelial fluid transport / heparin proteoglycan metabolic process / negative regulation of hormone secretion / cardiac neural crest cell migration involved in outflow tract morphogenesis / positive regulation of cell growth involved in cardiac muscle cell development / Weibel-Palade body / glomerular filtration / cGMP biosynthetic process / response to ozone / renal sodium excretion / renin secretion into blood stream / renal albumin absorption / response to leptin / positive regulation of prostaglandin secretion / regulation of systemic arterial blood pressure by endothelin / thyroid gland development / response to sodium phosphate / protein transmembrane transport / renal sodium ion absorption / melanocyte differentiation / axonogenesis involved in innervation / embryonic heart tube development / positive regulation of hormone secretion / artery smooth muscle contraction / cellular response to follicle-stimulating hormone stimulus / endothelin receptor signaling pathway / enteric nervous system development / cellular response to luteinizing hormone stimulus / positive regulation of prostaglandin biosynthetic process / axon extension / cellular response to mineralocorticoid stimulus / positive regulation of smooth muscle contraction / positive regulation of cation channel activity / superoxide anion generation / vasoconstriction / response to salt / basal part of cell / regulation of epithelial cell proliferation / signal transduction involved in regulation of gene expression / type 1 angiotensin receptor binding / negative regulation of adenylate cyclase activity / heart process / cellular response to toxic substance / negative regulation of protein metabolic process / cellular response to fatty acid / macrophage chemotaxis / establishment of endothelial barrier / response to pain / positive regulation of neutrophil chemotaxis / positive regulation of urine volume / cellular response to glucocorticoid stimulus / nitric oxide transport / response to dexamethasone / response to testosterone / positive regulation of cardiac muscle hypertrophy / positive regulation of cell size / canonical Wnt signaling pathway / negative regulation of smooth muscle cell apoptotic process / response to muscle stretch / peptide hormone binding / response to amino acid / ERK1 and ERK2 cascade / semaphorin-plexin signaling pathway / negative regulation of blood coagulation / cellular response to interleukin-1 / cellular response to transforming growth factor beta stimulus / membrane depolarization
Similarity search - Function
Endothelin receptor B / Endothelin receptor family / Endothelin-like toxin / Endothelin-like toxin, conserved site / Endothelin / : / Endothelin family / Endothelin family signature. / Endothelin / YVTN repeat-like/Quinoprotein amine dehydrogenase ...Endothelin receptor B / Endothelin receptor family / Endothelin-like toxin / Endothelin-like toxin, conserved site / Endothelin / : / Endothelin family / Endothelin family signature. / Endothelin / YVTN repeat-like/Quinoprotein amine dehydrogenase / Calycin / 7 Propeller / Methylamine Dehydrogenase; Chain H / 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 / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / P-loop containing nucleotide triphosphate hydrolases / 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 / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Endothelin-1 / Endothelin receptor type B / 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 / Oplophorus-luciferin 2-monooxygenase catalytic subunit
Similarity search - Component
Biological speciesHomo sapiens (human)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsYuan, Q. / Jiang, Y. / Xu, H.E. / Ji, Y. / Duan, J.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Nat Commun / Year: 2023
Title: Structural basis of peptide recognition and activation of endothelin receptors.
Authors: Yujie Ji / Jia Duan / Qingning Yuan / Xinheng He / Gong Yang / Shengnan Zhu / Kai Wu / Wen Hu / Tianyu Gao / Xi Cheng / Hualiang Jiang / H Eric Xu / Yi Jiang /
Abstract: Endothelin system comprises three endogenous 21-amino-acid peptide ligands endothelin-1, -2, and -3 (ET-1/2/3), and two G protein-coupled receptor (GPCR) subtypes-endothelin receptor A (ETR) and B ...Endothelin system comprises three endogenous 21-amino-acid peptide ligands endothelin-1, -2, and -3 (ET-1/2/3), and two G protein-coupled receptor (GPCR) subtypes-endothelin receptor A (ETR) and B (ETR). Since ET-1, the first endothelin, was identified in 1988 as one of the most potent endothelial cell-derived vasoconstrictor peptides with long-lasting actions, the endothelin system has attracted extensive attention due to its critical role in vasoregulation and close relevance in cardiovascular-related diseases. Here we present three cryo-electron microscopy structures of ETR and ETR bound to ET-1 and ETR bound to the selective peptide IRL1620. These structures reveal a highly conserved recognition mode of ET-1 and characterize the ligand selectivity by ETRs. They also present several conformation features of the active ETRs, thus revealing a specific activation mechanism. Together, these findings deepen our understanding of endothelin system regulation and offer an opportunity to design selective drugs targeting specific ETR subtypes.
History
DepositionNov 3, 2022Deposition site: PDBJ / Processing site: RCSB
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Guanine nucleotide-binding protein G(q) subunit alpha-1
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
D: Endothelin-1
E: scFv16
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2


Theoretical massNumber of molelcules
Total (without water)177,7456
Polymers177,7456
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG

#1: Protein Guanine nucleotide-binding protein G(q) subunit alpha-1


Mass: 28084.832 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Spodoptera frugiperda (fall armyworm)
#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 41055.867 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873
#6: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768

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Protein / Protein/peptide / Antibody , 3 types, 3 molecules CDE

#3: Protein Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera / ET-B / ET-BR / Endothelin receptor non-selective type / 19kOLase


Mass: 67882.320 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EDNRB, ETRB / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P24530, UniProt: Q9GV45, Oplophorus-luciferin 2-monooxygenase
#4: Protein/peptide Endothelin-1 / Preproendothelin-1 / PPET1


Mass: 2497.951 Da / Num. of mol.: 1 / Fragment: UNP residues 53-73
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EDN1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P05305
#5: Antibody scFv16


Mass: 30363.043 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Spodoptera frugiperda (fall armyworm)

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Details

Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: ET1-ETAR-Gq-scFv16 complex / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo (humans)9605
31Mus musculus (house mouse)10090
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 373655 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0029129
ELECTRON MICROSCOPYf_angle_d0.60712393
ELECTRON MICROSCOPYf_dihedral_angle_d3.5831245
ELECTRON MICROSCOPYf_chiral_restr0.0391423
ELECTRON MICROSCOPYf_plane_restr0.0051571

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