Structure of the Tie2 kinase domain in complex with a thiazolopyrimidine inhibitor

Experimental Data Snapshot

  • Resolution: 2.95 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.199 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Novel Thienopyrimidine and Thiazolopyrimidine Kinase Inhibitors with Activity Against Tie-2 in Vitro and in Vivo.

Luke, R.W.Ballard, P.Buttar, D.Campbell, L.Curwen, J.Emery, S.C.Griffen, A.M.Hassall, L.Hayter, B.R.Jones, C.D.Mccoull, W.Mellor, M.Swain, M.L.Tucker, J.A.

(2009) Bioorg Med Chem Lett 19: 6670

  • DOI: https://doi.org/10.1016/j.bmcl.2009.10.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The SAR and improvement in potency against Tie2 of novel thienopyrimidine and thiazolopyrimidine kinase inhibitors are reported. The crystal structure of one of these compounds bound to the Tie-2 kinase domain is consistent with the SAR. These compounds have moderate potency in cellular assays of Tie-2 inhibition, good physical properties, DMPK, and show evidence of in vivo inhibition of Tie-2.

  • Organizational Affiliation

    Cancer and Infection Research Area, AstraZeneca, Alderley Park, Macclesfield SK10 4TG, UK. richard.luke@astrazeneca.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ANGIOPOIETIN-1 RECEPTOR324Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for Q02763 (Homo sapiens)
Explore Q02763 
Go to UniProtKB:  Q02763
GTEx:  ENSG00000120156 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ02763
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on QQ1

Download Ideal Coordinates CCD File 
C21 H22 N6 S
Binding Affinity Annotations 
IDSourceBinding Affinity
QQ1 BindingDB:  2WQB IC50: 540 (nM) from 1 assay(s)
PDBBind:  2WQB IC50: 540 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.95 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.199 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.164α = 90
b = 108.791β = 90
c = 101.573γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2009-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2013-04-17
    Changes: Derived calculations, Refinement description
  • Version 1.3: 2019-03-06
    Changes: Data collection, Experimental preparation, Other
  • Version 1.4: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description