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- PDB-6omm: Cryo-EM structure of formyl peptide receptor 2/lipoxin A4 recepto... -

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Basic information

Entry
Database: PDB / ID: 6omm
TitleCryo-EM structure of formyl peptide receptor 2/lipoxin A4 receptor in complex with Gi
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • N-formyl peptide receptor 2
  • Peptide agonist
  • scFv16
KeywordsSIGNALING PROTEIN / Formyl peptide receptor 2/lipoxin A4 receptor / GPCR / Gi protein
Function / homology
Function and homology information


N-formyl peptide receptor activity / complement receptor activity / immune response-regulating cell surface receptor signaling pathway / scavenger receptor binding / RAGE receptor binding / complement receptor mediated signaling pathway / positive regulation of monocyte chemotaxis / positive regulation of innate immune response / Formyl peptide receptors bind formyl peptides and many other ligands / cargo receptor activity ...N-formyl peptide receptor activity / complement receptor activity / immune response-regulating cell surface receptor signaling pathway / scavenger receptor binding / RAGE receptor binding / complement receptor mediated signaling pathway / positive regulation of monocyte chemotaxis / positive regulation of innate immune response / Formyl peptide receptors bind formyl peptides and many other ligands / cargo receptor activity / positive chemotaxis / tertiary granule membrane / ficolin-1-rich granule membrane / adenylate cyclase inhibitor activity / specific granule membrane / positive regulation of protein localization to cell cortex / positive regulation of superoxide anion generation / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / astrocyte activation / cellular response to forskolin / receptor-mediated endocytosis / positive regulation of phagocytosis / regulation of mitotic spindle organization / Regulation of insulin secretion / calcium-mediated signaling / positive regulation of cholesterol biosynthetic process / microglial cell activation / negative regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / negative regulation of inflammatory response / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / centriolar satellite / G-protein beta/gamma-subunit complex binding / 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 / cellular response to amyloid-beta / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / chemotaxis / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / signaling receptor activity / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / amyloid-beta binding / retina development in camera-type eye / G protein activity / positive regulation of cytosolic calcium ion concentration / GTPase binding / Ca2+ pathway / fibroblast proliferation / midbody / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / cell cortex / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / negative regulation of neuron apoptotic process
Similarity search - Function
Transducin (heterotrimeric G protein), gamma chain / G Protein Gi Gamma 2 / Formyl peptide receptor-related / G-protein alpha subunit, group I / YVTN repeat-like/Quinoprotein amine dehydrogenase / 7 Propeller / Methylamine Dehydrogenase; Chain H / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit ...Transducin (heterotrimeric G protein), gamma chain / G Protein Gi Gamma 2 / Formyl peptide receptor-related / G-protein alpha subunit, group I / YVTN repeat-like/Quinoprotein amine dehydrogenase / 7 Propeller / Methylamine Dehydrogenase; Chain H / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / Few Secondary Structures / Irregular / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / 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) / WD domain, G-beta repeat / 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. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / Immunoglobulins / Immunoglobulin-like / Sandwich / P-loop containing nucleoside triphosphate hydrolase / Mainly Beta
Similarity search - Domain/homology
CHOLESTEROL / PALMITIC ACID / N-formyl peptide receptor 2 / 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
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.17 Å
AuthorsZhuang, Y. / Liu, H. / de Waal, P.W. / Zhou, X.E. / Wang, L. / Meng, X. / Zhao, G. / Kang, Y. / Melcher, K. / Xu, H.E. / Zhang, C.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)1R35GM128641 United States
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)1R01GM127710 United States
CitationJournal: Nat Commun / Year: 2020
Title: Structure of formylpeptide receptor 2-G complex reveals insights into ligand recognition and signaling.
Authors: Youwen Zhuang / Heng Liu / X Edward Zhou / Ravi Kumar Verma / Parker W de Waal / Wonjo Jang / Ting-Hai Xu / Lei Wang / Xing Meng / Gongpu Zhao / Yanyong Kang / Karsten Melcher / Hao Fan / ...Authors: Youwen Zhuang / Heng Liu / X Edward Zhou / Ravi Kumar Verma / Parker W de Waal / Wonjo Jang / Ting-Hai Xu / Lei Wang / Xing Meng / Gongpu Zhao / Yanyong Kang / Karsten Melcher / Hao Fan / Nevin A Lambert / H Eric Xu / Cheng Zhang /
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, ...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 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 coupling. Our results provide a basis for understanding the molecular mechanism of the functional promiscuity of FPRs.
History
DepositionApr 19, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 26, 2020Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2020Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2020Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2020Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Apr 2, 2025Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.1Apr 2, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Database references / Experimental summary / Data content type: EM metadata / EM metadata / Category: database_2 / em_admin / Data content type: EM metadata / EM metadata / EM metadata
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update
Revision 1.2May 14, 2025Group: Data collection / Structure summary
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Item: _em_admin.last_update / _em_software.name
Revision 1.2May 14, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

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Assembly

Deposited unit
R: N-formyl peptide receptor 2
L: Peptide agonist
A: Guanine nucleotide-binding protein G(i) subunit alpha-1
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
E: scFv16
hetero molecules


Theoretical massNumber of molelcules
Total (without water)156,99214
Polymers154,2906
Non-polymers2,7038
Water00
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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Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABC

#3: Protein Guanine nucleotide-binding protein G(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40327.891 Da / Num. of mol.: 1 / Mutation: G203A, A326S, D328E
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63096
#4: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 39021.648 Da / Num. of mol.: 1 / Mutation: Q6E, E130Q, N237D
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
#5: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7430.584 Da / Num. of mol.: 1 / Mutation: E17Q, E58Q
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 / Protein/peptide / Antibody , 3 types, 3 molecules RLE

#1: Protein N-formyl peptide receptor 2 / FMLP-related receptor I / FMLP-R-I / Formyl peptide receptor-like 1 / HM63 / Lipoxin A4 receptor / ...FMLP-related receptor I / FMLP-R-I / Formyl peptide receptor-like 1 / HM63 / Lipoxin A4 receptor / LXA4 receptor / RFP


Mass: 40329.238 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: FPR2, FPRH1, FPRL1, LXA4R / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P25090
#2: Protein/peptide Peptide agonist


Mass: 857.117 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#6: Antibody scFv16


Mass: 26323.324 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)

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Non-polymers , 2 types, 8 molecules

#7: Chemical
ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C27H46O
#8: Chemical ChemComp-PLM / PALMITIC ACID


Mass: 256.424 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C16H32O2

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Details

Has ligand of interestY
Has protein modificationY

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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: FPR2-Gi complex / Type: COMPLEX / Entity ID: #1-#6 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.2
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: unspecified
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 8.4 e/Å2 / Film or detector model: GATAN K2 BASE (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.13_2998: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.17 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1231594 / Symmetry type: POINT

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