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- EMDB-34667: Cryo-EM structure of Endothelin1-bound ETBR-Gq complex -

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Entry
Database: EMDB / ID: EMD-34667
TitleCryo-EM structure of Endothelin1-bound ETBR-Gq complex
Map data
Sample
  • Complex: ET1-ETAR-Gq-scFv16 complex
    • Protein or peptide: Guanine nucleotide-binding protein G(q) subunit alpha-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
    • Protein or peptide: Endothelin-1
    • Protein or peptide: scFv16
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
KeywordsET1 / ETAR / Gq / scFv16 / MEMBRANE PROTEIN
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 / Calycin ...Endothelin receptor B / Endothelin receptor family / Endothelin-like toxin / Endothelin-like toxin, conserved site / Endothelin / : / Endothelin family / Endothelin family signature. / Endothelin / Calycin / 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. / 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
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 (humans) / Homo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsYuan Q / Jiang Y / Xu HE / Ji Y / Duan J
Funding support China, 1 items
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, 2022-
Header (metadata) releaseMar 22, 2023-
Map releaseMar 22, 2023-
UpdateJun 4, 2025-
Current statusJun 4, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_34667.png

Downloads & links

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Map

FileDownload / File: emd_34667.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
1.04 Å/pix.
x 256 pix.
= 266.24 Å		1.04 Å/pix.
x 256 pix.
= 266.24 Å		1.04 Å/pix.
x 256 pix.
= 266.24 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.04 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.013
Minimum - Maximum-0.0034312103 - 1.8795893
Average (Standard dev.)0.0012929658 (±0.025917139)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 266.24 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_34667_half_map_1.map
Projections & Slices
AxesZYX

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Density Histograms

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Half map: #1

Fileemd_34667_half_map_2.map
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Sample components

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Entire : ET1-ETAR-Gq-scFv16 complex

EntireName: ET1-ETAR-Gq-scFv16 complex
Components
  • Complex: ET1-ETAR-Gq-scFv16 complex
    • Protein or peptide: Guanine nucleotide-binding protein G(q) subunit alpha-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
    • Protein or peptide: Endothelin-1
    • Protein or peptide: scFv16
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Supramolecule #1: ET1-ETAR-Gq-scFv16 complex

SupramoleculeName: ET1-ETAR-Gq-scFv16 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo (humans)

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

MacromoleculeName: Guanine nucleotide-binding protein G(q) subunit alpha-1
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.084832 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGSTVSAEDK AAAERSKMID KNLREDGEKA RRTLRLLLLG ADNSGKSTIV KQMRILHGGS GGSGGTSGIF ETKFQVDKVN FHMFDVGGQ RDERRKWIQC FNDVTAIIFV VDSSDYNRLQ EALNDFKSIW NNRWLRTISV ILFLNKQDLL AEKVLAGKSK I EDYFPEFA ...String:
MGSTVSAEDK AAAERSKMID KNLREDGEKA RRTLRLLLLG ADNSGKSTIV KQMRILHGGS GGSGGTSGIF ETKFQVDKVN FHMFDVGGQ RDERRKWIQC FNDVTAIIFV VDSSDYNRLQ EALNDFKSIW NNRWLRTISV ILFLNKQDLL AEKVLAGKSK I EDYFPEFA RYTTPEDATP EPGEDPRVTR AKYFIRKEFV DISTASGDGR HICYPHFTCA VDTENARRIF NDCKDIILQM NL REYNLV

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Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.055867 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI ...String:
MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI VTSSGDTTCA LWDIETGQQT TTFTGHTGDV MSLSLAPDTR LFVSGACDAS AKLWDVREGM CRQTFTGHES DI NAICFFP NGNAFATGSD DATCRLFDLR ADQELMTYSH DNIICGITSV SFSKSGRLLL AGYDDFNCNV WDALKADRAG VLA GHDNRV SCLGVTDDGM AVATGSWDSF LKIWNGSSGG GGSGGGGSSG VSGWRLFKKI S

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

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Macromolecule #3: Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase c...

MacromoleculeName: Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO / EC number: Oplophorus-luciferin 2-monooxygenase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 67.88232 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDSKGSSQKG SRLLLLLVVS NLLLCQGVVS DYKDDDDVDH HHHHHHHEER GFPPDRATPL LQTAEIMTPP TKTLWPKGSN ASLARSLAP AEVPKGDRTA GSPPRTISPP PCQGPIEIKE TFKYINTVVS CLVFVLGIIG NSTLLRIIYK NKCMRNGPNI L IASLALGD ...String:
MDSKGSSQKG SRLLLLLVVS NLLLCQGVVS DYKDDDDVDH HHHHHHHEER GFPPDRATPL LQTAEIMTPP TKTLWPKGSN ASLARSLAP AEVPKGDRTA GSPPRTISPP PCQGPIEIKE TFKYINTVVS CLVFVLGIIG NSTLLRIIYK NKCMRNGPNI L IASLALGD LLHIVIDIPI NVYKLLAEDW PFGAEMCKLV PFIQKASVGI TVLSLCALSI DRYRAVASWS RIKGIGVPKW TA VEIVLIW VVSVVLAVPE AIGFDIITMD YKGSYLRICL LHPVQKTAFM QFYKTAKDWW LFSFYFCLPL AITAFFYTLM TCE MLRKKS GMQIALNDHL KQRREVAKTV FCLVLVFALC WLPLHLSRIL KLTLYNQNDP NRCELLSFLL VLDYIGINMA SLNS CINPI ALYLVSKRFK NCFKSCLCCW CQSFEEKQSL EEKQSCLKFK VFTLEDFVGD WEQTAAYNLD QVLEQGGVSS LLQNL AVSV TPIQRIVRSG ENALKIDIHV IIPYEGLSAD QMAQIEEVFK VVYPVDDHHF KVILPYGTLV IDGVTPNMLN YFGRPY EGI AVFDGKKITV TGTLWNGNKI IDERLITPDG SMLFRVTINS

UniProtKB: Endothelin receptor type B, Oplophorus-luciferin 2-monooxygenase catalytic subunit

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Macromolecule #4: Endothelin-1

MacromoleculeName: Endothelin-1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 2.497951 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
CSCSSLMDKE CVYFCHLDII W

UniProtKB: Endothelin-1

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Macromolecule #5: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 30.363043 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFAVQ LVESGGGLVQ PGGSRKLSCS ASGFAFSSFG MHWVRQAPEK GLEWVAYIS SGSGTIYYAD TVKGRFTISR DDPKNTLFLQ MTSLRSEDTA MYYCVRSIYY YGSSPFDFWG QGTTLTVSAG G GGSGGGGS ...String:
MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFAVQ LVESGGGLVQ PGGSRKLSCS ASGFAFSSFG MHWVRQAPEK GLEWVAYIS SGSGTIYYAD TVKGRFTISR DDPKNTLFLQ MTSLRSEDTA MYYCVRSIYY YGSSPFDFWG QGTTLTVSAG G GGSGGGGS GGGGSADIVM TQATSSVPVT PGESVSISCR SSKSLLHSNG NTYLYWFLQR PGQSPQLLIY RMSNLASGVP DR FSGSGSG TAFTLTISRL EAEDVGVYYC MQHLEYPLTF GAGTKLEL

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Macromolecule #6: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 373655
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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