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- PDB-8dwg: CryoEM structure of Gq-coupled MRGPRX1 with peptide ligand BAM8-2... -

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Basic information

Entry
Database: PDB / ID: 8dwg
TitleCryoEM structure of Gq-coupled MRGPRX1 with peptide ligand BAM8-22 and positive allosteric modulator ML382
Components
  • (Guanine nucleotide-binding protein ...) x 2
  • Gs-mini-Gq chimera
  • Mas-related G-protein coupled receptor member X1
  • Proenkephalin-A
  • scFv16
KeywordsSIGNALING PROTEIN / GPCR
Function / homology
Function and homology information


Peptide ligand-binding receptors / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / Post-translational protein phosphorylation / response to chloroquine / chromaffin granule lumen / opioid receptor binding / opioid peptide activity / aggressive behavior / sensory perception / G alpha (i) signalling events ...Peptide ligand-binding receptors / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / Post-translational protein phosphorylation / response to chloroquine / chromaffin granule lumen / opioid receptor binding / opioid peptide activity / aggressive behavior / sensory perception / G alpha (i) signalling events / startle response / neuropeptide signaling pathway / behavioral fear response / axon terminus / sensory perception of pain / locomotory behavior / G protein-coupled receptor activity / acute-phase response / 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 activation / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / sensory perception of taste / GPER1 signaling / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / transmembrane signaling receptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / GTPase binding / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / chemical synaptic transmission / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / cell surface receptor signaling pathway / defense response to bacterium / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / neuronal cell body / dendrite / synapse / protein-containing complex binding / cell surface / signal transduction / extracellular exosome / extracellular region / membrane / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Proenkephalin A / Opioid neuropeptide precursor / Vertebrate endogenous opioids neuropeptide / Endogenous opioids neuropeptides precursors signature. / Mas-related G protein-coupled receptor family / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain ...Proenkephalin A / Opioid neuropeptide precursor / Vertebrate endogenous opioids neuropeptide / Endogenous opioids neuropeptides precursors signature. / Mas-related G protein-coupled receptor family / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / 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. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Chem-U39 / Proenkephalin-A / 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 / Mas-related G-protein coupled receptor member X1
Similarity search - Component
Biological speciesBos taurus (cattle)
Homo sapiens (human)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.71 Å
AuthorsLiu, Y. / Cao, C. / Fay, J.F. / Roth, B.L.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)R01DA055656 United States
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)U24DK116195 United States
CitationJournal: Nat Chem Biol / Year: 2023
Title: Ligand recognition and allosteric modulation of the human MRGPRX1 receptor.
Authors: Yongfeng Liu / Can Cao / Xi-Ping Huang / Ryan H Gumpper / Moira M Rachman / Sheng-Luen Shih / Brian E Krumm / Shicheng Zhang / Brian K Shoichet / Jonathan F Fay / Bryan L Roth /
Abstract: The human MAS-related G protein-coupled receptor X1 (MRGPRX1) is preferentially expressed in the small-diameter primary sensory neurons and involved in the mediation of nociception and pruritus. ...The human MAS-related G protein-coupled receptor X1 (MRGPRX1) is preferentially expressed in the small-diameter primary sensory neurons and involved in the mediation of nociception and pruritus. Central activation of MRGPRX1 by the endogenous opioid peptide fragment BAM8-22 and its positive allosteric modulator ML382 has been shown to effectively inhibit persistent pain, making MRGPRX1 a promising target for non-opioid pain treatment. However, the activation mechanism of MRGPRX1 is still largely unknown. Here we report three high-resolution cryogenic electron microscopy structures of MRGPRX1-Gαq in complex with BAM8-22 alone, with BAM8-22 and ML382 simultaneously as well as with a synthetic agonist compound-16. These structures reveal the agonist binding mode for MRGPRX1 and illuminate the structural requirements for positive allosteric modulation. Collectively, our findings provide a molecular understanding of the activation and allosteric modulation of the MRGPRX1 receptor, which could facilitate the structure-based design of non-opioid pain-relieving drugs.
History
DepositionAug 1, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 2, 2022Provider: repository / Type: Initial release
Revision 1.1Dec 7, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Apr 12, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.year / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Proenkephalin-A
B: Gs-mini-Gq chimera
C: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
D: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
R: Mas-related G-protein coupled receptor member X1
E: scFv16
hetero molecules


Theoretical massNumber of molelcules
Total (without water)139,7187
Polymers139,3586
Non-polymers3601
Water0
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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Protein , 2 types, 2 molecules BR

#2: Protein Gs-mini-Gq chimera


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)
#5: Protein Mas-related G-protein coupled receptor member X1 / Sensory neuron-specific G-protein coupled receptor 3/4


Mass: 36299.879 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: MRGPRX1, MRGX1, SNSR3, SNSR4 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q96LB2

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Guanine nucleotide-binding protein ... , 2 types, 2 molecules CD

#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 37728.152 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
#4: 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/peptide / Antibody / Non-polymers , 3 types, 3 molecules AE

#1: Protein/peptide Proenkephalin-A


Mass: 1974.225 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bos taurus (cattle) / Gene: PENK / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P01211
#6: Antibody scFv16


Mass: 27409.588 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)
#7: Chemical ChemComp-U39 / 2-[(cyclopropanesulfonyl)amino]-N-(2-ethoxyphenyl)benzamide


Mass: 360.427 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C18H20N2O4S / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY

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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: MRGPRX1-Gq BAM8-22 / Type: COMPLEX / Entity ID: #1-#6 / Source: RECOMBINANT
Molecular weightValue: 150 kDa/nm / Experimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
11Homo sapiens (human)9606
21Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
11Trichoplusia ni (cabbage looper)7111
21Spodoptera frugiperda (fall armyworm)7108
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE-PROPANE

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2400 nm / Nominal defocus min: 200 nm
Image recordingElectron dose: 45 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.18.2_3874: / Classification: refinement
EM software
IDNameCategory
2SerialEMimage acquisition
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.71 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 290962 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0058537
ELECTRON MICROSCOPYf_angle_d0.57511619
ELECTRON MICROSCOPYf_dihedral_angle_d17.491205
ELECTRON MICROSCOPYf_chiral_restr0.0451346
ELECTRON MICROSCOPYf_plane_restr0.0041456

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