4L7S

Kinase domain mutant of human Itk in complex with an aminobenzothiazole inhibitor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Identification of a Novel and Selective Series of Itk Inhibitors via a Template-Hopping Strategy.

Alder, C.M., Ambler, M., Campbell, A.J., Champigny, A.C., Deakin, A.M., Harling, J.D., Harris, C.A., Longstaff, T., Lynn, S., Maxwell, A.C., Mooney, C.J., Scullion, C., Singh, O.M., Smith, I.E., Somers, D.O., Tame, C.J., Wayne, G., Wilson, C., Woolven, J.M.

(2013) ACS Med Chem Lett 4: 948-952

  • DOI: 10.1021/ml400206q

  • PubMed Abstract: 

    • Inhibition of Itk potentially constitutes a novel, nonsteroidal treatment for asthma and other T-cell mediated diseases. In-house kinase cross-screening resulted in the identification of an aminopyrazole-based series of Itk inhibitors. Initial work o ...

    Inhibition of Itk potentially constitutes a novel, nonsteroidal treatment for asthma and other T-cell mediated diseases. In-house kinase cross-screening resulted in the identification of an aminopyrazole-based series of Itk inhibitors. Initial work on this series highlighted selectivity issues with several other kinases, particularly AurA and AurB. A template-hopping strategy was used to identify a series of aminobenzothiazole Itk inhibitors, which utilized an inherently more selective hinge binding motif. Crystallography and modeling were used to rationalize the observed selectivity. Initial exploration of the SAR around this series identified potent Itk inhibitors in both enzyme and cellular assays.

    Organizational Affiliation: 

    Respiratory Therapy Area Unit, GlaxoSmithKline Pharmaceuticals , Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, U.K.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase ITK/TSK
A, B
266Homo sapiensMutation(s): 1 
Gene Names: ITK (EMT, LYK)
EC: 2.7.10.2
Find proteins for Q08881 (Homo sapiens)
Go to Gene View: ITK
Go to UniProtKB:  Q08881
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download SDF File 
Download CCD File 
B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
G7K
Query on G7K
Download SDF File 
Download CCD File 
A, B
trans-4-({4-[difluoro(4-fluorophenyl)methyl]-6-[(5-methoxy[1,3]thiazolo[5,4-b]pyridin-2-yl)amino]pyrimidin-2-yl}amino)cyclohexanol
C24 H23 F3 N6 O2 S
PFDUFECOJKSDAT-WKILWMFISA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
G7KKi: 16 nM (99) BINDINGDB
G7KKi: 15.8 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.172 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 146.857α = 90.00
b = 69.523β = 108.18
c = 68.617γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACphasing
SCALAdata scaling
MOSFLMdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2013-06-14 
  • Released Date: 2014-01-22 
  • Deposition Author(s): Somers, D.O.

Revision History 

  • Version 1.0: 2014-01-22
    Type: Initial release
  • Version 1.1: 2014-09-24
    Type: Database references