3EML

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.196 

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

  • 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 sapiensEnterobacteria phage T4
This entity is chimeric
Mutation(s): 0 
Gene Names: ADORA2A (ADORA2), E
EC: 3.2.1.17
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
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
STE
Query on STE

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

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ZMA
Query on ZMA

Download SDF File 
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
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
ZMAKd: .22 nM (89) BINDINGDB
ZMAKi: 0.1 - 64 nM (89) BINDINGDB
ZMAIC50: 33 nM (89) BINDINGDB
ZMAKd: 1.8 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.196 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.736α = 90.00
b = 76.932β = 101.32
c = 86.553γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
Blu-Icedata collection
PHENIXrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

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