6OMM

Cryo-EM structure of formyl peptide receptor 2/lipoxin A4 receptor in complex with Gi


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.17 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Literature

Structure of formylpeptide receptor 2-Gicomplex reveals insights into ligand recognition and signaling.

Zhuang, Y.Liu, H.Edward Zhou, X.Kumar Verma, R.de Waal, P.W.Jang, W.Xu, T.H.Wang, L.Meng, X.Zhao, G.Kang, Y.Melcher, K.Fan, H.Lambert, N.A.Eric Xu, H.Zhang, C.

(2020) Nat Commun 11: 885-885

  • DOI: 10.1038/s41467-020-14728-9
  • Primary Citation of Related Structures:  
    6OMM

  • PubMed Abstract: 
  • Formylpeptide receptors (FPRs) as G protein-coupled receptors (GPCRs) can recognize formylpeptides derived from pathogens or host cells to function in host defense and cell clearance. In addition, FPRs, especially FPR2, can also recognize other ligands w ...

    Formylpeptide receptors (FPRs) as G protein-coupled receptors (GPCRs) can recognize formylpeptides derived from pathogens or host cells to function in host defense and cell clearance. In addition, FPRs, especially FPR2, can also recognize other ligands with a large chemical diversity generated at different stages of inflammation to either promote or resolve inflammation in order to maintain a balanced inflammatory response. The mechanism underlying promiscuous ligand recognition and activation of FPRs is not clear. Here we report a cryo-EM structure of FPR2-G i signaling complex with a peptide agonist. The structure reveals a widely open extracellular region with an amphiphilic environment for ligand binding. Together with computational docking and simulation, the structure suggests a molecular basis for the recognition of formylpeptides and a potential mechanism of receptor activation, and reveals conserved and divergent features in G i coupling. Our results provide a basis for understanding the molecular mechanism of the functional promiscuity of FPRs.


    Organizational Affiliation

    Laboratory for GPCR Biology, Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA, 15261, USA. chengzh@pitt.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
N-formyl peptide receptor 2 R363Homo sapiensMutation(s): 0 
Gene Names: FPR2FPRH1FPRL1LXA4R
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors: Class A
Protein: 
Formylpeptide receptor FPR2-Gi coomplex
Find proteins for P25090 (Homo sapiens)
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PHAROS:  P25090
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide agonist L6synthetic constructMutation(s): 0 
Protein Feature View
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1 A353Homo sapiensMutation(s): 3 
Gene Names: GNAI1
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors: Class A
Protein: 
Formylpeptide receptor FPR2-Gi coomplex
Find proteins for P63096 (Homo sapiens)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 B353Homo sapiensMutation(s): 3 
Gene Names: GNB1
Find proteins for P62873 (Homo sapiens)
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PHAROS:  P62873
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 C67Homo sapiensMutation(s): 2 
Gene Names: GNG2
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors: Class A
Protein: 
Formylpeptide receptor FPR2-Gi coomplex
Find proteins for P59768 (Homo sapiens)
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
scFv16 E247synthetic constructMutation(s): 0 
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.17 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United States1R35GM128641
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United States1R01GM127710

Revision History 

  • Version 1.0: 2020-02-26
    Type: Initial release