7S8O

CryoEM structure of Gi-coupled MRGPRX2 with small molecule agonist (R)-Zinc-3573

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.58 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structure, function and pharmacology of human itch GPCRs.

Cao, C., Kang, H.J., Singh, I., Chen, H., Zhang, C., Ye, W., Hayes, B.W., Liu, J., Gumpper, R.H., Bender, B.J., Slocum, S.T., Krumm, B.E., Lansu, K., McCorvy, J.D., Kroeze, W.K., English, J.G., DiBerto, J.F., Olsen, R.H.J., Huang, X.P., Zhang, S., Liu, Y., Kim, K., Karpiak, J., Jan, L.Y., Abraham, S.N., Jin, J., Shoichet, B.K., Fay, J.F., Roth, B.L.

(2021) Nature 600: 170-175

  • DOI: 10.1038/s41586-021-04126-6
  • Primary Citation of Related Structures:  
    7S8L, 7S8M, 7S8N, 7S8O, 7S8P

  • PubMed Abstract: 

    • The MRGPRX family of receptors (MRGPRX1-4) is a family of mas-related G-protein-coupled receptors that have evolved relatively recently 1 . Of these, MRGPRX2 and MRGPRX4 are key physiological and pathological mediators of itch and related mast cell-mediated hypersensitivity reactions 2-5 ...

    The MRGPRX family of receptors (MRGPRX1-4) is a family of mas-related G-protein-coupled receptors that have evolved relatively recently 1 . Of these, MRGPRX2 and MRGPRX4 are key physiological and pathological mediators of itch and related mast cell-mediated hypersensitivity reactions 2-5 . MRGPRX2 couples to both G i and G q in mast cells 6 . Here we describe agonist-stabilized structures of MRGPRX2 coupled to G i1 and G q 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 q . Together, these findings should accelerate the structure-guided discovery of therapeutic agents for pain, itch and mast cell-mediated hypersensitivity.

    Organizational Affiliation: 

    Department of Pharmacology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, NC, USA. bryan_roth@med.unc.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Soluble cytochrome b562,Mas-related G-protein coupled receptor member X2 chimeraA [auth R]480Escherichia coli, Homo sapiens
This entity is chimeric		Mutation(s): 3 
Gene Names: cybC, MRGPRX2, MRGX2
Membrane Entity: Yes 
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Go to UniProtKB:  P0ABE7
Find proteins for Q96LB1 (Homo sapiens)
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PHAROS:  Q96LB1
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UniProt GroupsQ96LB1P0ABE7
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1B354Homo sapiensMutation(s): 4 
Gene Names: GNAI1
Membrane Entity: Yes 
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Find proteins for P63096 (Homo sapiens)
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PHAROS:  P63096
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UniProt GroupP63096
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1C358Homo sapiensMutation(s): 0 
Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens)
Explore P62873 
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PHAROS:  P62873
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UniProt GroupP62873
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2D71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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Find proteins for P59768 (Homo sapiens)
Explore P59768 
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PHAROS:  P59768
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UniProt GroupP59768
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
scFv16E267Mus musculusMutation(s): 0 
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Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8IU (Subject of Investigation/LOI)
Query on 8IU
Download Ideal Coordinates CCD File 
F [auth R](3R)-N,N-dimethyl-1-[(8S)-5-phenylpyrazolo[1,5-a]pyrimidin-7-yl]pyrrolidin-3-amine
C18 H21 N5
XKBSPAZCFAIBJL-OAHLLOKOSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.58 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC

Structure Validation

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View more in-depth experimental data
Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2021-11-17
    Type: Initial release
  • Version 1.1: 2021-12-01
    Changes: Database references
  • Version 1.2: 2021-12-15
    Changes: Database references