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- PDB-8hbd: Cryo-EM structure of IRL1620-bound ETBR-Gi complex -

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Basic information

Entry
Database: PDB / ID: 8hbd
TitleCryo-EM structure of IRL1620-bound ETBR-Gi complex
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Endothelin receptor type B,Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera
  • IRL1620
  • scFv16
KeywordsMEMBRANE PROTEIN / IRL1620 / ETBR / Gi
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 receptor activity / regulation of fever generation / vein smooth muscle contraction / positive regulation of penile erection / developmental pigmentation ...enteric smooth muscle cell differentiation / chordate pharynx development / response to endothelin / aldosterone metabolic process / negative regulation of neuron maturation / endothelin receptor activity / regulation of fever generation / vein smooth muscle contraction / positive regulation of penile erection / developmental pigmentation / podocyte differentiation / epithelial fluid transport / heparin proteoglycan metabolic process / cGMP biosynthetic process / renal sodium excretion / renin secretion into blood stream / renal albumin absorption / response to sodium phosphate / protein transmembrane transport / renal sodium ion absorption / melanocyte differentiation / endothelin receptor signaling pathway / enteric nervous system development / vasoconstriction / regulation of epithelial cell proliferation / type 1 angiotensin receptor binding / negative regulation of adenylate cyclase activity / negative regulation of protein metabolic process / macrophage chemotaxis / establishment of endothelial barrier / response to pain / positive regulation of urine volume / canonical Wnt signaling pathway / peptide hormone binding / regulation of eating behavior / regulation of heart rate / adenylate cyclase inhibitor activity / T cell migration / positive regulation of protein localization to cell cortex / Transcriptional and post-translational regulation of MITF-M expression and activity / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / gene expression / D2 dopamine receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / Peptide ligand-binding receptors / calcium-mediated signaling / mast cell degranulation / chemokine-mediated signaling pathway / neuropeptide signaling pathway / Regulation of insulin secretion / response to prostaglandin E / positive regulation of cholesterol biosynthetic process / vasodilation / G protein-coupled receptor binding / response to peptide hormone / calcium ion transmembrane transport / G-protein beta/gamma-subunit complex binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / GDP binding / photoreceptor disc membrane / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / G beta:gamma signalling through PI3Kgamma / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / nervous system development / GPER1 signaling / positive regulation of cytosolic calcium ion concentration / cellular response to lipopolysaccharide / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade
Similarity search - Function
Endothelin receptor B / Endothelin receptor family / : / YVTN repeat-like/Quinoprotein amine dehydrogenase / G-protein alpha subunit, group I / 7 Propeller / Methylamine Dehydrogenase; Chain H / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit ...Endothelin receptor B / Endothelin receptor family / : / YVTN repeat-like/Quinoprotein amine dehydrogenase / G-protein alpha subunit, group I / 7 Propeller / Methylamine Dehydrogenase; Chain H / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / 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 / P-loop containing nucleoside triphosphate hydrolase / Mainly Beta
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)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.99 Å
AuthorsYuan, Q. / Ji, Y. / Jiang, Y. / Duan, J. / Xu, H.E.
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
DepositionOct 28, 2022Deposition site: PDBJ / Processing site: RCSB
Revision 1.0Mar 22, 2023Provider: repository / Type: Initial release
Revision 1.1Oct 4, 2023Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Nov 13, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Guanine nucleotide-binding protein G(i) subunit alpha-1
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
H: scFv16
L: IRL1620
R: Endothelin receptor type B,Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera


Theoretical massNumber of molelcules
Total (without water)189,4446
Polymers189,4446
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(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40445.059 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63096
#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
#3: 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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Antibody / Protein/peptide / Protein , 3 types, 3 molecules HLR

#4: 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)
#5: Protein/peptide IRL1620


Mass: 1836.970 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)
#6: Protein Endothelin receptor type B,Endothelin receptor type B,Oplophorus-luciferin 2-monooxygenase catalytic subunit chimera / ET-B / ET-BR / Endothelin receptor non-selective type


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, Oplophorus-luciferin 2-monooxygenase

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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: IRL1620-bound ETBR-Gi complex / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
31Mus musculus (house mouse)10090
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.04
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: 18000 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 191493 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0039041
ELECTRON MICROSCOPYf_angle_d0.57612273
ELECTRON MICROSCOPYf_dihedral_angle_d3.3631236
ELECTRON MICROSCOPYf_chiral_restr0.0381423
ELECTRON MICROSCOPYf_plane_restr0.0051545

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