3EML

The 2.6 A Crystal Structure of a Human A2A Adenosine Receptor bound to ZM241385.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The 2.6 Angstrom Crystal Structure of a Human A2A Adenosine Receptor Bound to an Antagonist.

Jaakola, V.P.Griffith, M.T.Hanson, M.A.Cherezov, V.Chien, E.Y.Lane, J.R.Ijzerman, A.P.Stevens, R.C.

(2008) Science 322: 1211-1217

  • DOI: 10.1126/science.1164772
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The adenosine class of heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors (GPCRs) mediates the important role of extracellular adenosine in many physiological processes and is antagonized by caffeine. We have determined t ...

    The adenosine class of heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors (GPCRs) mediates the important role of extracellular adenosine in many physiological processes and is antagonized by caffeine. We have determined the crystal structure of the human A2A adenosine receptor, in complex with a high-affinity subtype-selective antagonist, ZM241385, to 2.6 angstrom resolution. Four disulfide bridges in the extracellular domain, combined with a subtle repacking of the transmembrane helices relative to the adrenergic and rhodopsin receptor structures, define a pocket distinct from that of other structurally determined GPCRs. The arrangement allows for the binding of the antagonist in an extended conformation, perpendicular to the membrane plane. The binding site highlights an integral role for the extracellular loops, together with the helical core, in ligand recognition by this class of GPCRs and suggests a role for ZM241385 in restricting the movement of a tryptophan residue important in the activation mechanism of the class A receptors.


    Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037 USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Human Adenosine A2A receptor/T4 lysozyme chimera
A
488Homo sapiensEscherichia virus T4Mutation(s): 0 
Gene Names: ADORA2A
EC: 3.2.1.17
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
A2A adenosine receptor
Find proteins for P29274 (Homo sapiens)
Go to UniProtKB:  P29274
NIH Common Fund Data Resources
PHAROS  P29274
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZMA
Query on ZMA

Download CCD File 
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
 Ligand Interaction
STE
Query on STE

Download CCD File 
A
STEARIC ACID
C18 H36 O2
QIQXTHQIDYTFRH-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
ZMAKi:  0.9300000071525574   nM  BindingDB
ZMAIC50:  1.5   nM  BindingDB
ZMAKi:  0.30000001192092896   nM  BindingDB
ZMAKi:  1.2000000476837158   nM  BindingDB
ZMAIC50:  0.6800000071525574   nM  BindingDB
ZMAKi:  0.10000000149011612   nM  BindingDB
ZMAKi:  1.600000023841858   nM  BindingDB
ZMAKi:  5.300000190734863   nM  BindingDB
ZMAKd:  1.7999999523162842   nM  PDBBind
ZMAKi:  64   nM  BindingDB
ZMAKi:  0.800000011920929   nM  BindingDB
ZMAKi:  1.399999976158142   nM  BindingDB
ZMAIC50:  33   nM  BindingDB
ZMAKi:  0.9100000262260437   nM  BindingDB
ZMAKi:  1.899999976158142   nM  BindingDB
ZMAKd:  0.2199999988079071   nM  BindingDB
ZMAKi:  2   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.736α = 90
b = 76.932β = 101.32
c = 86.553γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2008-10-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-08-08
    Changes: Other
  • Version 1.3: 2017-08-02
    Changes: Refinement description, Source and taxonomy