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Basic information
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Title | Cryo-EM structure of endothelin1-bound ETAR-Gq complex | |||||||||
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![]() | ET1 / ETAR / Gq / scFv16 / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() regulation of protein localization to cell leading edge / : / Oplophorus-luciferin 2-monooxygenase / Oplophorus-luciferin 2-monooxygenase activity / endothelin A receptor binding / rhythmic excitation / negative regulation of phospholipase C/protein kinase C signal transduction / endothelin receptor activity / peptide hormone secretion / endothelin B receptor binding ...regulation of protein localization to cell leading edge / : / Oplophorus-luciferin 2-monooxygenase / Oplophorus-luciferin 2-monooxygenase activity / endothelin A receptor binding / rhythmic excitation / 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 / meiotic cell cycle process involved in oocyte maturation / semaphorin-plexin signaling pathway involved in axon guidance / positive regulation of artery morphogenesis / cellular response to mineralocorticoid stimulus / histamine secretion / neural crest cell fate commitment / vein smooth muscle contraction / glomerular endothelium development / response to prostaglandin F / sympathetic neuron axon guidance / positive regulation of sarcomere organization / noradrenergic neuron differentiation / atrial cardiac muscle tissue development / vascular associated smooth muscle cell development / leukocyte activation / phospholipase D-activating G protein-coupled receptor signaling pathway / maternal process involved in parturition / positive regulation of chemokine-mediated signaling pathway / cardiac chamber formation / body fluid secretion / rough endoplasmic reticulum lumen / heparin proteoglycan metabolic process / positive regulation of renal sodium excretion / pharyngeal arch artery morphogenesis / regulation of D-glucose transmembrane transport / endothelin receptor signaling pathway involved in heart process / positive regulation of odontogenesis / epithelial fluid transport / cardiac neural crest cell migration involved in outflow tract morphogenesis / negative regulation of hormone secretion / response to ozone / Weibel-Palade body / endothelin receptor signaling pathway / response to acetylcholine / podocyte differentiation / podocyte apoptotic process / developmental pigmentation / positive regulation of cation channel activity / left ventricular cardiac muscle tissue morphogenesis / positive regulation of cell growth involved in cardiac muscle cell development / embryonic skeletal system development / sodium ion homeostasis / response to leptin / renal sodium ion absorption / enteric nervous system development / mesenchymal cell apoptotic process / axonogenesis involved in innervation / glomerular filtration / protein transmembrane transport / positive regulation of smooth muscle contraction / artery smooth muscle contraction / renal albumin absorption / positive regulation of prostaglandin secretion / cellular response to follicle-stimulating hormone stimulus / cellular response to luteinizing hormone stimulus / vasoconstriction / respiratory gaseous exchange by respiratory system / regulation of pH / basal part of cell / sympathetic nervous system development / cranial skeletal system development / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / response to salt / norepinephrine metabolic process / positive regulation of urine volume / regulation of systemic arterial blood pressure by endothelin / positive regulation of hormone secretion / cellular response to toxic substance / embryonic heart tube development / dorsal/ventral pattern formation / cellular response to fatty acid / establishment of endothelial barrier / cartilage development / axon extension / positive regulation of neutrophil chemotaxis / prostaglandin biosynthetic process / superoxide anion generation / signal transduction involved in regulation of gene expression / negative regulation of protein metabolic process / aorta development / middle ear morphogenesis / nitric oxide transport / cellular response to glucocorticoid stimulus / neuromuscular process / neuron remodeling / branching involved in blood vessel morphogenesis / response to dexamethasone / positive regulation of cardiac muscle hypertrophy / response to testosterone Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.01 Å | |||||||||
![]() | Yuan Q / Jiang Y / Xu HE / Ji Y / Duan J | |||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 56.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20 KB 20 KB | Display Display | ![]() |
Images | ![]() | 37.6 KB | ||
Filedesc metadata | ![]() | 6.6 KB | ||
Others | ![]() ![]() | 49.6 MB 49.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 800 KB | Display | ![]() |
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Full document | ![]() | 799.6 KB | Display | |
Data in XML | ![]() | 12.3 KB | Display | |
Data in CIF | ![]() | 14.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8hcqMC ![]() 8hbdC ![]() 8hcxC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.824 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_34663_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_34663_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : ET1-ETAR-Gq-scFv16 complex
Entire | Name: ET1-ETAR-Gq-scFv16 complex |
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Components |
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-Supramolecule #1: ET1-ETAR-Gq-scFv16 complex
Supramolecule | Name: ET1-ETAR-Gq-scFv16 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #6, #5, #1-#4 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Guanine nucleotide-binding protein G(q) subunit alpha-1
Macromolecule | Name: Guanine nucleotide-binding protein G(q) subunit alpha-1 type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 28.084832 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: 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 |
-Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Macromolecule | Name: 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 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 41.055867 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: 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 |
-Macromolecule #3: scFv16
Macromolecule | Name: scFv16 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 30.363043 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: 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 |
-Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #5: Endothelin-1
Macromolecule | Name: Endothelin-1 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 2.497951 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: CSCSSLMDKE CVYFCHLDII W UniProtKB: Endothelin-1 |
-Macromolecule #6: Endothelin-1 receptor,Oplophorus-luciferin 2-monooxygenase cataly...
Macromolecule | Name: Endothelin-1 receptor,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO / EC number: Oplophorus-luciferin 2-monooxygenase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 69.969906 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MDSKGSSQKG SRLLLLLVVS NLLLCQGVVS DYKDDDDVDM GQPGNGSAFL LAPNGSHAPD HDVTQQRDEE NLYFQGASDN PERYSTNLS NHVDDFTTFR GTELSFLVTT HQPTNLVLPS NGSMHNYCPQ QTKITSAFKY INTVISCTIF IVGMVGNATL L RIIYQNKC ...String: MDSKGSSQKG SRLLLLLVVS NLLLCQGVVS DYKDDDDVDM GQPGNGSAFL LAPNGSHAPD HDVTQQRDEE NLYFQGASDN PERYSTNLS NHVDDFTTFR GTELSFLVTT HQPTNLVLPS NGSMHNYCPQ QTKITSAFKY INTVISCTIF IVGMVGNATL L RIIYQNKC MRNGPNALIA SLALGDLIYV VIDLPINVFK LLAGRWPFDH NDFGVFLCKL FPFLQKSSVG ITVLNLCALS VD RYRAVAS WSRVQGIGIP LVTAIEIVSI WILSFILAIP EAIGFVMVPF EYRGEQHKTC MLNATSKFME FYQDVKDWWL FGF YFCMPL VCTAIFYTLM TCEMLNRRNG SLRIALSEHL KQRREVAKTV FCLVVIFALC WFPLHLSRIL KKTVYNEMDK NRCE LLSFL LLMDYIGINL ATMNSCINPI ALYFVSKKFK NCFQSCLCCC CYQSKSLMTS VPMNGTSIQV FTLEDFVGDW EQTAA YNLD QVLEQGGVSS LLQNLAVSVT PIQRIVRSGE NALKIDIHVI IPYEGLSADQ MAQIEEVFKV VYPVDDHHFK VILPYG TLV IDGVTPNMLN YFGRPYEGIA VFDGKKITVT GTLWNGNKII DERLITPDGS MLFRVTINS UniProtKB: Endothelin-1 receptor, Oplophorus-luciferin 2-monooxygenase catalytic subunit |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination 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
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.01 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 510197 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |