3RFM

Thermostabilised adenosine A2A receptor in complex with caffeine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.297 
  • R-Value Observed: 0.297 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the adenosine A(2A) receptor in complex with ZM241385 and the xanthines XAC and caffeine

Dore, A.S.Robertson, N.Errey, J.C.Ng, I.Hollenstein, K.Tehan, B.Hurrell, E.Bennett, K.Congreve, M.Magnani, F.Tate, C.G.Weir, M.Marshall, F.H.

(2011) Structure 19: 1283-1293

  • DOI: 10.1016/j.str.2011.06.014
  • Primary Citation of Related Structures:  
    3PWH, 3REY, 3RFM

  • PubMed Abstract: 
  • Methylxanthines, including caffeine and theophylline, are among the most widely consumed stimulant drugs in the world. These effects are mediated primarily via blockade of adenosine receptors. Xanthine analogs with improved properties have been devel ...

    Methylxanthines, including caffeine and theophylline, are among the most widely consumed stimulant drugs in the world. These effects are mediated primarily via blockade of adenosine receptors. Xanthine analogs with improved properties have been developed as potential treatments for diseases such as Parkinson's disease. Here we report the structures of a thermostabilized adenosine A(2A) receptor in complex with the xanthines xanthine amine congener and caffeine, as well as the A(2A) selective inverse agonist ZM241385. The receptor is crystallized in the inactive state conformation as defined by the presence of a salt bridge known as the ionic lock. The complete third intracellular loop, responsible for G protein coupling, is visible consisting of extended helices 5 and 6. The structures provide new insight into the features that define the ligand binding pocket of the adenosine receptor for ligands of diverse chemotypes as well as the cytoplasmic regions that interact with signal transduction proteins.


    Organizational Affiliation

    Heptares Therapeutics Ltd, BioPark, Welwyn Garden City, Herts, AL7 3AX, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Adenosine receptor A2aA329Homo sapiensMutation(s): 8 
Gene Names: ADORA2AADORA2
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs): Class A
Protein: 
A2A adenosine receptor in complex with caffeine
Find proteins for P29274 (Homo sapiens)
Explore P29274 
Go to UniProtKB:  P29274
NIH Common Fund Data Resources
PHAROS  P29274
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CFF
Query on CFF

Download CCD File 
A
CAFFEINE
C8 H10 N4 O2
RYYVLZVUVIJVGH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.297 
  • R-Value Observed: 0.297 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.327α = 90
b = 113.328β = 90
c = 129.3γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-09-07
    Type: Initial release
  • Version 1.1: 2012-06-20
    Changes: Database references