8J21

Cryo-EM structure of FFAR3 complex bound with butyrate acid

• PDB DOI: https://doi.org/10.2210/pdb8J21/pdb
• EM Map EMD-35941: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 
• Membrane Protein: Yes  PDBTMMemProtMD


• Deposited: 2023-04-14 Released: 2024-01-24 
• Deposition Author(s): Tai, L., Li, F., Sun, X., Tang, W., Wang, J.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.30 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Molecular recognition and activation mechanism of short-chain fatty acid receptors FFAR2/3.

Li, F., Tai, L., Sun, X., Lv, Z., Tang, W., Wang, T., Zhao, Z., Gong, D., Ma, S., Tang, S., Gu, Q., Zhu, X., Yu, M., Liu, X., Wang, J.

(2024) Cell Res 34: 323-326

• PubMed: 38191689 
• DOI: https://doi.org/10.1038/s41422-023-00914-z
• Primary Citation of Related Structures:  
  8J20, 8J21, 8J22, 8J24

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Organizational Affiliation: 

Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 156.72 kDa 
• Atom Count: 8,803 
• Modelled Residue Count: 1,125 
• Deposited Residue Count: 1,413 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	A	377	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: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
scFV16	B	297	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(i) subunit alpha-1	C	354	Homo sapiens	Mutation(s): 0  Gene Names: GNAI1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P63096 (Homo sapiens) Explore P63096  Go to UniProtKB:  P63096
PHAROS:  P63096 GTEx:  ENSG00000127955

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Free fatty acid receptor 3	D	314	Homo sapiens	Mutation(s): 7  Gene Names: FFAR3, GPR41 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for O14843 (Homo sapiens) Explore O14843  Go to UniProtKB:  O14843
GTEx:  ENSG00000185897

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	E	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BUA (Subject of Investigation/LOI)	F [auth D]	butanoic acid C4 H8 O2 FERIUCNNQQJTOY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.30 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-01-24 
Deposition Author(s): Tai, L., Li, F., Sun, X., Tang, W., Wang, J.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2024-01-24
  Type: Initial release
  
• Version 1.1: 2024-04-10
  Changes: Database references