9IJ9

A Cryo-EM structure of Bitter taste receptor TAS2R14 with Gi complex

• PDB DOI: https://doi.org/10.2210/pdb9IJ9/pdb
• EM Map EMD-60626: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 
• Membrane Protein: Yes  mpstruc


• Deposited: 2024-06-21 Released: 2024-07-24 
• Deposition Author(s): Yuan, Q., Duan, J., Tao, L., Xu, E.H.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Bitter taste receptor TAS2R14 activation and G protein assembly by an intracellular agonist.

Tao, L., Wang, D., Yuan, Q., Zhao, F., Zhang, Y., Du, T., Shen, S., Xu, H.E., Li, Y., Yang, D., Duan, J.

(2024) Cell Res 34: 735-738

• PubMed: 38969802 
• DOI: https://doi.org/10.1038/s41422-024-00995-4
• Primary Citation of Related Structures:  
  9IIW, 9IIX, 9IJ9, 9IJA

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Organizational Affiliation: 

Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, Guangdong, China.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 122.88 kDa 
• Atom Count: 6,793 
• Modelled Residue Count: 898 
• Deposited Residue Count: 1,085 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(i) subunit alpha-1	A	354	Homo sapiens	Mutation(s): 0  Gene Names: GNAI1 EC: 3.6.5 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: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	B	344	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	70	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

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Taste receptor type 2 member 14	D [auth R]	317	Homo sapiens	Mutation(s): 0  Gene Names: TAS2R14 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NYV8 (Homo sapiens) Explore Q9NYV8  Go to UniProtKB:  Q9NYV8
PHAROS:  Q9NYV8 GTEx:  ENSG00000212127

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CLR (Subject of Investigation/LOI)	F [auth R]	CHOLESTEROL C27 H46 O HVYWMOMLDIMFJA-DPAQBDIFSA-N
A1AEI (Subject of Investigation/LOI)	E [auth R]	4-methyl-N-[(2M)-2-(1H-tetrazol-5-yl)phenyl]-6-(trifluoromethyl)pyrimidin-2-amine C13 H10 F3 N7 XXKGCSWBGJTTJM-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-07-24 
Deposition Author(s): Yuan, Q., Duan, J., Tao, L., Xu, E.H.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2024-07-24
  Type: Initial release
  
• Version 1.1: 2024-10-16
  Changes: Data collection, Database references, Structure summary