Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 36756.43 
• Atom Count: 2271 
• Residue Count: 329 
• Unique protein chains: 1

3UZA

Thermostabilised Adenosine A2A receptor in complex with 6-(2,6-Dimethylpyridin-4-yl)-5-phenyl-1,2,4-triazin-3-amine

• DOI: 10.2210/pdb3UZA/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): 8 


• Deposited: 2011-12-07 Released: 2012-03-21 
• Deposition Author(s): Congreve, M., Andrews, S.P., Dore, A.S., Hollenstein, K., Hurrell, E., Langmead, C.J., Mason, J.S., Ng, I.W., Tehan, B., Zhukov, A., Weir, M., Marshall, F.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.273 Å
• R-Value Free: 0.335 
• R-Value Work: 0.293 

Literature

Discovery of 1,2,4-Triazine Derivatives as Adenosine A(2A) Antagonists using Structure Based Drug Design

Congreve, M., Andrews, S.P., Dore, A.S., Hollenstein, K., Hurrell, E., Langmead, C.J., Mason, J.S., Ng, I.W., Tehan, B., Zhukov, A., Weir, M., Marshall, F.H.

(2012) J.Med.Chem. 55: 1898-1903

• PubMed: 22220592 
• DOI: 10.1021/jm201376w
• Primary Citation of Related Structures:  
  3UZC


• PubMed Abstract: 
  

Potent, ligand efficient, selective, and orally efficacious 1,2,4-triazine derivatives have been identified using structure based drug design approaches as antagonists of the adenosine A(2A) receptor. The X-ray crystal structures of compounds 4e and 4g bound to the GPCR illustrate that the molecules bind deeply inside the orthosteric binding cavity. In vivo pharmacokinetic and efficacy data for compound 4k are presented, demonstrating the potential of this series of compounds for the treatment of Parkinson's disease.

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Organizational Affiliation: 

Heptares Therapeutics Limited, BioPark, Broadwater Road, Welwyn Garden City, Hertfordshire AL7 3AX, UK. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Adenosine receptor A2a	A	329	Homo sapiens	Mutation(s): 8  Gene Names: ADORA2A (ADORA2)
Find proteins for P29274 (Homo sapiens) Go to Gene View: ADORA2A Go to UniProtKB:  P29274

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
T4G	A	6-(2,6-dimethylpyridin-4-yl)-5-phenyl-1,2,4-triazin-3-amine C16 H15 N5 SORFNYWLKDSNNF-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
T4G	Ki: 7.8 nM (97) BINDINGDB
T4G	Kd: 1.16 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.273 Å
• R-Value Free: 0.335 
• R-Value Work: 0.293 
• Space Group: I 2 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 111.814	α = 90.00
b = 111.896	β = 90.00
c = 125.841	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-12-07 
• Released Date: 2012-03-21 
• Deposition Author(s): Congreve, M., Andrews, S.P., Dore, A.S., Hollenstein, K., Hurrell, E., Langmead, C.J., Mason, J.S., Ng, I.W., Tehan, B., Zhukov, A., Weir, M., Marshall, F.H.

Revision History 

• Version 1.0: 2012-03-21
  Type: Initial release