7T6T

Structure of the human FPR1-Gi complex with fMLFII


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular recognition of formylpeptides and diverse agonists by the formylpeptide receptors FPR1 and FPR2.

Zhuang, Y.Wang, L.Guo, J.Sun, D.Wang, Y.Liu, W.Xu, H.E.Zhang, C.

(2022) Nat Commun 13: 1054-1054

  • DOI: https://doi.org/10.1038/s41467-022-28586-0
  • Primary Citation of Related Structures:  
    7T6S, 7T6T, 7T6U, 7T6V

  • PubMed Abstract: 

    The formylpeptide receptors (FPRs) mediate pattern recognition of formylated peptides derived from invading pathogens or mitochondria from dead host cells. They can also sense other structurally distinct native peptides and even lipid mediators to either promote or resolve inflammation. Pharmacological targeting of FPRs represents a novel therapeutic approach in treating inflammatory diseases. However, the molecular mechanisms underlying FPR ligand recognition are elusive. We report cryo-EM structures of G i -coupled FPR1 and FPR2 bound to a formylpeptide and G i -coupled FPR2 bound to two synthetic peptide and small-molecule agonists. Together with mutagenesis data, our structures reveal the molecular mechanism of formylpeptide recognition by FPRs and structural variations of FPR1 and FPR2 leading to their different ligand preferences. Structural analysis also suggests that diverse FPR agonists sample a conserved activation chamber at the bottom of ligand-binding pockets to activate FPRs. Our results provide a basis for rational drug design on FPRs.


  • Organizational Affiliation

    The CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1353Homo sapiensMutation(s): 0 
Gene Names: GNAI1
Membrane Entity: Yes 
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PHAROS:  P63096
GTEx:  ENSG00000127955 
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UniProt GroupP63096
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1353RattusMutation(s): 0 
Gene Names: Gnb1
UniProt
Find proteins for P54311 (Rattus norvegicus)
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UniProt GroupP54311
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-267Bos taurusMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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UniProt GroupP63212
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  • Reference Sequence

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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Synthetic peptideD [auth L]5HomoMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
fMet-Leu-Phe receptorE [auth R]354Homo sapiensMutation(s): 0 
Gene Names: FPR1
Membrane Entity: Yes 
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Find proteins for P21462 (Homo sapiens)
Explore P21462 
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PHAROS:  P21462
GTEx:  ENSG00000171051 
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UniProt GroupP21462
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
FME
Query on FME
D [auth L]L-PEPTIDE LINKINGC6 H11 N O3 SMET
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Released Date: 2022-03-30 
  • Deposition Author(s): Zhuang, Y.W.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35GM128641

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-30
    Type: Initial release
  • Version 1.1: 2022-10-19
    Changes: Database references, Structure summary