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- EMDB-24899: CryoEM structure of Gi-coupled MRGPRX2 with small molecule agonis... -

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Basic information

Entry
Database: EMDB / ID: EMD-24899
TitleCryoEM structure of Gi-coupled MRGPRX2 with small molecule agonist (R)-Zinc-3573
Map dataDeep sharp
Sample
  • Complex: MRGPRX2-Gi1 (R)-ZINC-3573
    • Protein or peptide: Soluble cytochrome b562,Mas-related G-protein coupled receptor member X2 chimera
    • 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
  • Ligand: (3R)-N,N-dimethyl-1-[(8S)-5-phenylpyrazolo[1,5-a]pyrimidin-7-yl]pyrrolidin-3-amine
Function / homology
Function and homology information


mast cell secretagogue receptor activity / mast cell activation / neuropeptide binding / sleep / mast cell degranulation / positive regulation of cytokinesis / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / cell cortex region / regulation of cAMP-mediated signaling ...mast cell secretagogue receptor activity / mast cell activation / neuropeptide binding / sleep / mast cell degranulation / positive regulation of cytokinesis / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / cell cortex region / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / sensory perception of pain / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / Olfactory Signaling Pathway / G-protein beta/gamma-subunit complex binding / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / 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 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / response to peptide hormone / 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 / cellular response to prostaglandin E stimulus / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / sensory perception of taste / GPER1 signaling / GDP binding / G-protein beta-subunit binding / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / G alpha (12/13) signalling events / signaling receptor complex adaptor 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 / cell cortex / G alpha (i) signalling events / fibroblast proliferation / midbody / G alpha (s) signalling events / G alpha (q) signalling events / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / electron transfer activity / periplasmic space / cell cycle / G protein-coupled receptor signaling pathway / iron ion binding / lysosomal membrane / cell division / GTPase activity / centrosome / synapse / heme binding / protein-containing complex binding / GTP binding / nucleolus / magnesium ion binding / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Mas-related G protein-coupled receptor family / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / G-protein alpha subunit, group I / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit ...Mas-related G protein-coupled receptor family / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / G-protein alpha subunit, group I / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / 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. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / 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
Soluble cytochrome b562 / 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 / Mas-related G-protein coupled receptor member X2
Similarity search - Component
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.58 Å
AuthorsCao C / Fay JF / Gumpper RH / Roth BL
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK) United States
CitationJournal: Nature / Year: 2021
Title: Structure, function and pharmacology of human itch GPCRs.
Authors: Can Cao / Hye Jin Kang / Isha Singh / He Chen / Chengwei Zhang / Wenlei Ye / Byron W Hayes / Jing Liu / Ryan H Gumpper / Brian J Bender / Samuel T Slocum / Brian E Krumm / Katherine Lansu / ...Authors: Can Cao / Hye Jin Kang / Isha Singh / He Chen / Chengwei Zhang / Wenlei Ye / Byron W Hayes / Jing Liu / Ryan H Gumpper / Brian J Bender / Samuel T Slocum / Brian E Krumm / Katherine Lansu / John D McCorvy / Wesley K Kroeze / Justin G English / Jeffrey F DiBerto / Reid H J Olsen / Xi-Ping Huang / Shicheng Zhang / Yongfeng Liu / Kuglae Kim / Joel Karpiak / Lily Y Jan / Soman N Abraham / Jian Jin / Brian K Shoichet / Jonathan F Fay / Bryan L Roth /
Abstract: The MRGPRX family of receptors (MRGPRX1-4) is a family of mas-related G-protein-coupled receptors that have evolved relatively recently. Of these, MRGPRX2 and MRGPRX4 are key physiological and ...The MRGPRX family of receptors (MRGPRX1-4) is a family of mas-related G-protein-coupled receptors that have evolved relatively recently. Of these, MRGPRX2 and MRGPRX4 are key physiological and pathological mediators of itch and related mast cell-mediated hypersensitivity reactions. MRGPRX2 couples to both G and G in mast cells. Here we describe agonist-stabilized structures of MRGPRX2 coupled to G and G in ternary complexes with the endogenous peptide cortistatin-14 and with a synthetic agonist probe, respectively, and the development of potent antagonist probes for MRGPRX2. We also describe a specific MRGPRX4 agonist and the structure of this agonist in a complex with MRGPRX4 and G. Together, these findings should accelerate the structure-guided discovery of therapeutic agents for pain, itch and mast cell-mediated hypersensitivity.
History
DepositionSep 18, 2021-
Header (metadata) releaseNov 17, 2021-
Map releaseNov 17, 2021-
UpdateDec 15, 2021-
Current statusDec 15, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0786
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.0786
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7s8o
  • Surface level: 0.0786
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_24899.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationDeep sharp
Voxel sizeX=Y=Z: 0.91 Å
Density
Contour LevelBy AUTHOR: 0.0786 / Movie #1: 0.0786
Minimum - Maximum-0.02713061 - 1.8176616
Average (Standard dev.)0.0015452431 (±0.026504053)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 232.96 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.910.910.91
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z232.960232.960232.960
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ256256256
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.0271.8180.002

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Supplemental data

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Mask #1

Fileemd_24899_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Additional map: sharp map

Fileemd_24899_additional_1.map
Annotationsharp map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: half map

Fileemd_24899_half_map_1.map
Annotationhalf map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: half map

Fileemd_24899_half_map_2.map
Annotationhalf map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Sample components

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Entire : MRGPRX2-Gi1 (R)-ZINC-3573

EntireName: MRGPRX2-Gi1 (R)-ZINC-3573
Components
  • Complex: MRGPRX2-Gi1 (R)-ZINC-3573
    • Protein or peptide: Soluble cytochrome b562,Mas-related G-protein coupled receptor member X2 chimera
    • 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
  • Ligand: (3R)-N,N-dimethyl-1-[(8S)-5-phenylpyrazolo[1,5-a]pyrimidin-7-yl]pyrrolidin-3-amine

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Supramolecule #1: MRGPRX2-Gi1 (R)-ZINC-3573

SupramoleculeName: MRGPRX2-Gi1 (R)-ZINC-3573 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 150 kDa/nm

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Macromolecule #1: Soluble cytochrome b562,Mas-related G-protein coupled receptor me...

MacromoleculeName: Soluble cytochrome b562,Mas-related G-protein coupled receptor member X2 chimera
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.054625 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: DYKDDDDAKL QTMHHHHHHH HHHENLYFQG GTTMADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATPP KLEDKSPDS PEMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LGSTLEVLFQ GPDPTTPAWG T ESTTVNGN ...String:
DYKDDDDAKL QTMHHHHHHH HHHENLYFQG GTTMADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATPP KLEDKSPDS PEMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LGSTLEVLFQ GPDPTTPAWG T ESTTVNGN DQALLLLCGK ETLIPVFLIL FIALVGLVGN GFVLWLLGFR MRRNAFSVYV LSLAGADFLF LCFQIINCLV YL SNFFCSI SINFPSFFTT VMTCAYLAGL SMLSTVSTER CLSVLWPIWY RCRRPRHLSA VVCVLLWALS LLLSILEGKF CGF LFSDGD SGWCQTFDFI TAAWLIFLFM VLCGSSLALL VRILCGSRGL PLTRLYLTIL LTVLVFLLCG LPFGIQWFLI LWIW KDSDV LFCHIHPVSV VLSSLNSSAN PIIYFFVGSF RKQWRLQQPI LKLALQRALQ DIAEVDHSEG CFRQGTPEMS RSSLV

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Macromolecule #2: Guanine nucleotide-binding protein G(i) subunit alpha-1

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.414047 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGAQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHASM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF

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Macromolecule #3: 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: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 39.418086 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR ...String:
MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR FLDDNQIVTS SGDTTCALWD IETGQQTTTF TGHTGDVMSL SLAPDTRLFV SGACDASAKL WDVREGMCRQ TF TGHESDI NAICFFPNGN AFATGSDDAT CRLFDLRADQ ELMTYSHDNI ICGITSVSFS KSGRLLLAGY DDFNCNVWDA LKA DRAGVL AGHDNRVSCL GVTDDGMAVA TGSWDSFLKI WN

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Macromolecule #4: 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: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

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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: 28.668922 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String:
DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL KAAALEVLFQ GPHHHHHHHH

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Macromolecule #6: (3R)-N,N-dimethyl-1-[(8S)-5-phenylpyrazolo[1,5-a]pyrimidin-7-yl]p...

MacromoleculeName: (3R)-N,N-dimethyl-1-[(8S)-5-phenylpyrazolo[1,5-a]pyrimidin-7-yl]pyrrolidin-3-amine
type: ligand / ID: 6 / Number of copies: 1 / Formula: 8IU
Molecular weightTheoretical: 307.393 Da
Chemical component information

ChemComp-8IU:
(3R)-N,N-dimethyl-1-[(8S)-5-phenylpyrazolo[1,5-a]pyrimidin-7-yl]pyrrolidin-3-amine

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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: 7.5
GridModel: C-flat-1.2/1.3 / Material: GOLD / Mesh: 300
VitrificationCryogen name: ETHANE-PROPANE

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 45.0 e/Å2
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.58 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 705283
FSC plot (resolution estimation)

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