9EHS | pdb_00009ehs

Structure of a human adenosine A3 receptor complex bound to the covalent antagonist LUF7602

• PDB DOI: https://doi.org/10.2210/pdb9EHS/pdb
• EM Map EMD-48065: EMDB EMDataResource

• Classification: SIGNALING PROTEIN
• Organism(s): synthetic construct, Homo sapiens
• Expression System: synthetic construct, Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 2024-11-24 Released: 2025-08-20 
• Deposition Author(s): Zhang, L., Mobbs, J.I., Glukhova, A., Thal, D.M.
• Funding Organization(s): National Health and Medical Research Council (NHMRC, Australia), Australian Research Council (ARC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Molecular basis of ligand binding and receptor activation at the human A3 adenosine receptor

Zhang, L., Mobbs, J.I., Bennetts, F.M., Venugopal, H., Nguyen, A.T., Christopoulos, A., van der Es, D., Heitman, L.H., May, L.T., Glukhova, A., Thal, D.M.

(2025) bioRxiv 

• DOI: https://doi.org/10.1101/2025.01.12.632629

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A2B1C1 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 116.75 kDa 
• Atom Count: 7,201 
• Modeled Residue Count: 924 
• Deposited Residue Count: 1,051 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BAG2 Anti-BRIL Fab Heavy Chain	A [auth H]	231	synthetic construct	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
elbow nanobody	B [auth K]	136	synthetic construct	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
BAG2 Anti-BRIL Fab Light Chain	C [auth L]	215	synthetic construct	Mutation(s): 0

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Adenosine receptor A3,adenosine A3 receptor fused to BRIL	D [auth R]	469	Homo sapiens	Mutation(s): 1  Gene Names: ADORA3
UniProt & NIH Common Fund Data Resources
Find proteins for P0DMS8 (Homo sapiens) Explore P0DMS8  Go to UniProtKB:  P0DMS8
PHAROS:  P0DMS8 GTEx:  ENSG00000282608

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1BII (Subject of Investigation/LOI)	E [auth R]	LUF7602 C23 H24 F N5 O6 S QNCALQNHCSHYFR-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21rc1_5127

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-20 
Deposition Author(s): Zhang, L., Mobbs, J.I., Glukhova, A., Thal, D.M.

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Funding Organization	Location	Grant Number
National Health and Medical Research Council (NHMRC, Australia)	Australia	1196951
National Health and Medical Research Council (NHMRC, Australia)	Australia	138448
Australian Research Council (ARC)	Australia	LP180100560

Revision History  

• Version 1.0: 2025-08-20
  Type: Initial release