3VGA

Crystal structure of human adenosine A2A receptor with an allosteric inverse-agonist antibody at 3.1 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

G-protein-coupled receptor inactivation by an allosteric inverse-agonist antibody

Hino, T.Arakawa, T.Iwanari, H.Yurugi-Kobayashi, T.Ikeda-Suno, C.Nakada-Nakura, Y.Kusano-Arai, O.Weyand, S.Shimamura, T.Nomura, N.Cameron, A.D.Kobayashi, T.Hamakubo, T.Iwata, S.Murata, T.

(2012) Nature 482: 237-240

  • DOI: 10.1038/nature10750
  • Primary Citation of Related Structures:  
    3VGA, 3VG9

  • PubMed Abstract: 
  • G-protein-coupled receptors are the largest class of cell-surface receptors, and these membrane proteins exist in equilibrium between inactive and active states. Conformational changes induced by extracellular ligands binding to G-protein-coupled rec ...

    G-protein-coupled receptors are the largest class of cell-surface receptors, and these membrane proteins exist in equilibrium between inactive and active states. Conformational changes induced by extracellular ligands binding to G-protein-coupled receptors result in a cellular response through the activation of G proteins. The A(2A) adenosine receptor (A(2A)AR) is responsible for regulating blood flow to the cardiac muscle and is important in the regulation of glutamate and dopamine release in the brain. Here we report the raising of a mouse monoclonal antibody against human A(2A)AR that prevents agonist but not antagonist binding to the extracellular ligand-binding pocket, and describe the structure of A(2A)AR in complex with the antibody Fab fragment (Fab2838). This structure reveals that Fab2838 recognizes the intracellular surface of A(2A)AR and that its complementarity-determining region, CDR-H3, penetrates into the receptor. CDR-H3 is located in a similar position to the G-protein carboxy-terminal fragment in the active opsin structure and to CDR-3 of the nanobody in the active β(2)-adrenergic receptor structure, but locks A(2A)AR in an inactive conformation. These results suggest a new strategy to modulate the activity of G-protein-coupled receptors.


    Organizational Affiliation

    Iwata Human Receptor Crystallography Project, ERATO, Japan Science and Technology Agency, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Adenosine receptor A2aA326Homo sapiensMutation(s): 1 
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 inverse-agonist antibody
Find proteins for P29274 (Homo sapiens)
Explore P29274 
Go to UniProtKB:  P29274
NIH Common Fund Data Resources
PHAROS  P29274
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
antibody fab fragment light chainB214Mus musculusMutation(s): 0 
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
antibody fab fragment heavy chainC226Mus musculusMutation(s): 0 
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.199 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 120.313α = 90
b = 89.766β = 96.14
c = 110.682γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHASERphasing
PHENIXrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2012-02-01
    Type: Initial release
  • Version 1.1: 2012-02-15
    Changes: Database references