9KFT | pdb_00009kft

Cryo-EM structure of the fMLFC-FPR1-Gi complex

• PDB DOI: https://doi.org/10.2210/pdb9KFT/pdb
• EM Map EMD-62300: EMDB EMDataResource

• Classification: PEPTIDE BINDING PROTEIN
• Organism(s): Homo sapiens, Vicugna pacos
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2024-11-06 Released: 2025-11-12 
• Deposition Author(s): Chen, G., Wang, J., Ye, R.D.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.06 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of the fMLFC-FPR1-Gi complex

Chen, G., Wang, J., Ye, R.D.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A1B1C1D1E1F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 151.01 kDa 
• Atom Count: 8,749 
• Modeled Residue Count: 1,143 
• Deposited Residue Count: 1,365 
• Unique protein chains: 6

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(i) subunit alpha-1	A	353	Homo sapiens	Mutation(s): 0  Gene Names: GNAI1 EC: 3.6.5
UniProt & NIH Common Fund Data Resources
Find proteins for P63096 (Homo sapiens) Explore P63096  Go to UniProtKB:  P63096
PHAROS:  P63096 GTEx:  ENSG00000127955

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	B	340	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	C	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
fMet-Leu-Phe receptor	D [auth R]	350	Homo sapiens	Mutation(s): 0  Gene Names: FPR1
UniProt & NIH Common Fund Data Resources
Find proteins for P21462 (Homo sapiens) Explore P21462  Go to UniProtKB:  P21462
PHAROS:  P21462 GTEx:  ENSG00000171051

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
SCFV16	E [auth S]	247	Vicugna pacos	Mutation(s): 0

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
fMLFC peptide	F [auth L]	4	Homo sapiens	Mutation(s): 0

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
FME	F [auth L]	L-PEPTIDE LINKING	C6 H11 N O3 S		MET

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.06 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC	v4.4.1

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-11-12 
Deposition Author(s): Chen, G., Wang, J., Ye, R.D.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-11-12
  Type: Initial release