2WQB

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

• PDB DOI: https://doi.org/10.2210/pdb2WQB/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 2009-08-18 Released: 2009-11-03 
• Deposition Author(s): Brassington, C., Breed, J., Buttar, D., Fitzek, M., Forder, C., Hassall, L., Hayter, B.R., Jones, C.D., Luke, R.W.A., McCall, E., McCoull, W., Norman, R., Paterson, D., McMiken, H., Rowsell, S., Tucker, J.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.259 
• R-Value Work: 0.196 
• R-Value Observed: 0.199 

Starting Model: experimental

Literature

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

• PubMed: 19854647 
• DOI: https://doi.org/10.1016/j.bmcl.2009.10.001
• Primary Citation of Related Structures:  
  2WQB


• 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.

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Organizational Affiliation: 

Cancer and Infection Research Area, AstraZeneca, Alderley Park, Macclesfield SK10 4TG, UK. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 37.38 kDa 
• Atom Count: 2,333 
• Modelled Residue Count: 289 
• Deposited Residue Count: 324 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANGIOPOIETIN-1 RECEPTOR	A	324	Homo sapiens	Mutation(s): 1  EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q02763 (Homo sapiens) Explore Q02763  Go to UniProtKB:  Q02763
PHAROS:  Q02763 GTEx:  ENSG00000120156

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
QQ1	B [auth A]	2-[3-(CYCLOHEXYLMETHYL)-5-PHENYL-IMIDAZOL-4-YL]-[1,3]THIAZOLO[4,5-E]PYRIMIDIN-7-AMINE C21 H22 N6 S FACMGTJQTMTYEF-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding 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

• Method: X-RAY DIFFRACTION
• 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 = 80.164	α = 90
b = 108.791	β = 90
c = 101.573	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-11-03 
Deposition Author(s): Brassington, C., Breed, J., Buttar, D., Fitzek, M., Forder, C., Hassall, L., Hayter, B.R., Jones, C.D., Luke, R.W.A., McCall, E., McCoull, W., Norman, R., Paterson, D., McMiken, H., Rowsell, S., Tucker, J.A.

Revision History  

• 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
• Version 1.5: 2024-11-13
  Changes: Structure summary