9P1T | pdb_00009p1t

A2AR-BRIL in complex with ZM241385

• PDB DOI: https://doi.org/10.2210/pdb9P1T/pdb
• EM Map EMD-71131: EMDB EMDataResource

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


• Deposited: 2025-06-10 Released: 2025-12-24 
• Deposition Author(s): Rao, P., Rathinaswamy, M., Chan, M., Paredes, A.G., Patel, C., Wranik, B.J., Powell, J., Eaton, D., Hicks, K.J., Mafi, A., Hao, Q.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.15 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Systematic metabolite screening identifies functional regulators of the adenosine A2A receptor.

Rao, P., Rathinaswamy, M., Chan, M., Paredes, A.G., Patel, C., Wranik, B.J., Powell, J., Eaton, D., Rutter, J., Hicks, K.G., Mafi, A., Hao, Q.

(2025) Commun Chem 9: 19-19

• PubMed: 41366530 
• DOI: https://doi.org/10.1038/s42004-025-01825-3
• Primary Citation Related Structures: 
  9P1S, 9P1T


• PubMed Abstract: 
  

  The adenosine A2A receptor (A2AR) is a Class A G protein-coupled receptor (GPCR) that regulates inflammation, glucose metabolism, and energy homeostasis in metabolically active tissues. While the effects of small-molecule ligands and protein interactions with A2AR have been extensively studied, the regulatory influence of endogenous metabolites remains unexplored. To address this gap, we employed the Mass spectrometry Integrated with equilibrium Dialysis for the discovery of Allostery Systematically (MIDAS) platform to screen a library of human metabolites for interactions with A2AR. This approach identified 180 metabolites that interact with A2AR, including allosteric and orthosteric modulators. We characterized the mechanisms of three metabolites previously unreported to interact with A2AR: prostaglandin D2, an allosteric antagonist that fully inhibits receptor signaling, and two orthosteric agonists, S-adenosyl-L-homocysteine and 2'-deoxyadenosine, that fully activate A2AR. Overall, these findings highlight the potential of the MIDAS platform to uncover previously unrecognized metabolite-GPCR interactions for research and therapeutic applications.

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Organizational Affiliation: 
• Calico Life Sciences LLC, 1170 Veterans Blvd, South San Francisco, CA, USA.
Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, 6124 Harry Hines Blvd, Dallas, TX, USA.
Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA.
Howard Hughes Medical Institute, University of Utah School of Medicine, Salt Lake City, UT, USA.
Department of Nutrition and Integrative Physiology, University of Utah College of Health, Salt Lake City, UT, USA. [e-mail].
Calico Life Sciences LLC, 1170 Veterans Blvd, South San Francisco, CA, USA. [e-mail].
Calico Life Sciences LLC, 1170 Veterans Blvd, South San Francisco, CA, USA. [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 49.15 kDa 
• Atom Count: 2,179 
• Modeled Residue Count: 271 
• Deposited Residue Count: 430 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Adenosine receptor A2a,Soluble cytochrome b562	A	430	Homo sapiens	Mutation(s): 12  Gene Names: ADORA2A, ADORA2, cybC
UniProt & NIH Common Fund Data Resources
Find proteins for P29274 (Homo sapiens) Explore P29274  Go to UniProtKB:  P29274
PHAROS:  P29274 GTEx:  ENSG00000128271

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LMN	B [auth A]	Lauryl Maltose Neopentyl Glycol C47 H88 O22 MADJBYLAYPCCOO-XYPZXBMFSA-N
ZMA	C [auth A]	4-{2-[(7-amino-2-furan-2-yl[1,2,4]triazolo[1,5-a][1,3,5]triazin-5-yl)amino]ethyl}phenol C16 H15 N7 O2 PWTBZOIUWZOPFT-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.15 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.19.2_4158
RECONSTRUCTION	RELION

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-12-24 
Deposition Author(s): Rao, P., Rathinaswamy, M., Chan, M., Paredes, A.G., Patel, C., Wranik, B.J., Powell, J., Eaton, D., Hicks, K.J., Mafi, A., Hao, Q.

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Funding Organization	Location	Grant Number
Not funded	United States	--

Revision History  

• Version 1.0: 2025-12-24
  Type: Initial release
  
• Version 1.1: 2026-01-28
  Changes: Data collection, Database references