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- EMDB-34619: Cryo-EM structure of IRL1620-bound ETBR-Gi complex -

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Entry
Database: EMDB / ID: EMD-34619
TitleCryo-EM structure of IRL1620-bound ETBR-Gi complex
Map data
Sample
  • Complex: IRL1620-bound ETBR-Gi complex
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: scFv16
    • Protein or peptide: IRL1620
    • Protein or peptide: Endothelin receptor type B,Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
KeywordsIRL1620 / ETBR / Gi / MEMBRANE PROTEIN
Function / homology
Function and homology information


enteric smooth muscle cell differentiation / response to endothelin / negative regulation of neuron maturation / chordate pharynx development / neuroblast migration / endothelin receptor activity / aldosterone metabolic process / regulation of fever generation / vein smooth muscle contraction / positive regulation of penile erection ...enteric smooth muscle cell differentiation / response to endothelin / negative regulation of neuron maturation / chordate pharynx development / neuroblast migration / endothelin receptor activity / aldosterone metabolic process / regulation of fever generation / vein smooth muscle contraction / positive regulation of penile erection / heparin proteoglycan metabolic process / posterior midgut development / epithelial fluid transport / endothelin receptor signaling pathway / podocyte differentiation / developmental pigmentation / renal sodium excretion / response to sodium phosphate / enteric nervous system development / protein transmembrane transport / renal sodium ion absorption / renin secretion into blood stream / renal albumin absorption / regulation of pH / vasoconstriction / melanocyte differentiation / peripheral nervous system development / type 1 angiotensin receptor binding / negative regulation of adenylate cyclase activity / positive regulation of urine volume / regulation of epithelial cell proliferation / establishment of endothelial barrier / neural crest cell migration / negative regulation of protein metabolic process / : / response to pain / macrophage chemotaxis / peptide hormone binding / canonical Wnt signaling pathway / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / Transcriptional and post-translational regulation of MITF-M expression and activity / cellular response to forskolin / regulation of heart rate / regulation of mitotic spindle organization / Peptide ligand-binding receptors / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / calcium-mediated signaling / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / calcium ion transmembrane transport / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / vasodilation / 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / 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 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / nervous system development / heterotrimeric G-protein complex
Similarity search - Function
Endothelin receptor B / Endothelin receptor family / : / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / 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 ...Endothelin receptor B / Endothelin receptor family / : / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / 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 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 / 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
Similarity search - Domain/homology
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 / Guanine nucleotide-binding protein G(i) subunit alpha-1
Similarity search - Component
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.99 Å
AuthorsYuan Q / Ji Y / Jiang Y / Duan J / Xu HE
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
DepositionOct 28, 2022-
Header (metadata) releaseMar 22, 2023-
Map releaseMar 22, 2023-
UpdateNov 13, 2024-
Current statusNov 13, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_34619.png

Downloads & links

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Map

FileDownload / File: emd_34619.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

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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: 0.0553
Minimum - Maximum-0.014427981 - 1.6816137
Average (Standard dev.)0.0014691125 (±0.02572938)
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_34619_half_map_1.map
Projections & Slices
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Half map: #1

Fileemd_34619_half_map_2.map
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Sample components

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Entire : IRL1620-bound ETBR-Gi complex

EntireName: IRL1620-bound ETBR-Gi complex
Components
  • Complex: IRL1620-bound ETBR-Gi complex
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: scFv16
    • Protein or peptide: IRL1620
    • Protein or peptide: Endothelin receptor type B,Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera

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Supramolecule #1: IRL1620-bound ETBR-Gi complex

SupramoleculeName: IRL1620-bound ETBR-Gi complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.445059 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGAQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF

UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1

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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: 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: 3 / 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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Macromolecule #4: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 4 / 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 #5: IRL1620

MacromoleculeName: IRL1620 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 1.83697 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
DDEEAVYFAH LDIIW

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Macromolecule #6: Endothelin receptor type B,Endothelin receptor type B,Oplophorus-...

MacromoleculeName: Endothelin receptor type B,Endothelin receptor type B,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
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

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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: 7.04
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (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: 18.0 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 191493
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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