3RFM

Thermostabilised adenosine A2A receptor in complex with caffeine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.598 Å
  • R-Value Free: 0.311 
  • R-Value Work: 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

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Adenosine receptor A2a
A
329Homo sapiensGene Names: ADORA2A (ADORA2)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
A2A adenosine receptor
Find proteins for P29274 (Homo sapiens)
Go to Gene View: ADORA2A
Go to UniProtKB:  P29274
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CFF
Query on CFF

Download SDF File 
Download CCD File 
A
CAFFEINE
3,7-DIHYDRO-1,3,7-TRIMETHYL-1H-PURINE-2,6-DIONE
C8 H10 N4 O2
RYYVLZVUVIJVGH-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
CFFKi: 5011.9 - 80000 nM (97) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.598 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.297 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 112.327α = 90.00
b = 113.328β = 90.00
c = 129.300γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
XDSdata reduction
PHENIXrefinement
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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