2WTC

CRYSTAL STRUCTURE OF CHK2 IN COMPLEX WITH AN INHIBITOR

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Identification and Characterisation of 2-Aminopyridine Inhibitors of Checkpoint Kinase 2

Hilton, S., Naud, S., Caldwell, J.J., Boxall, K., Burns, S., Anderson, V.E., Antoni, L., Allen, C.E., Pearl, L.H., Oliver, A.W., Aherne, G.W., Garrett, M.D., Collins, I.

(2010) Bioorg Med Chem 18: 707

  • DOI: 10.1016/j.bmc.2009.11.058
  • Primary Citation of Related Structures:  
    2WTI, 2WTJ, 2WTC, 2WTD

  • PubMed Abstract: 

    • 5-(Hetero)aryl-3-(4-carboxamidophenyl)-2-aminopyridine inhibitors of CHK2 were identified from high throughput screening of a kinase-focussed compound library. Rapid exploration of the hits through straightforward chemistry established structure-activity relationships and a proposed ATP-competitive binding mode which was verified by X-ray crystallography of several analogues bound to CHK2 ...

    5-(Hetero)aryl-3-(4-carboxamidophenyl)-2-aminopyridine inhibitors of CHK2 were identified from high throughput screening of a kinase-focussed compound library. Rapid exploration of the hits through straightforward chemistry established structure-activity relationships and a proposed ATP-competitive binding mode which was verified by X-ray crystallography of several analogues bound to CHK2. Variation of the 5-(hetero)aryl substituent identified bicyclic dioxolane and dioxane groups which improved the affinity and the selectivity of the compounds for CHK2 versus CHK1. The 3-(4-carboxamidophenyl) substituent could be successfully replaced by acyclic omega-aminoalkylamides, which made additional polar interactions within the binding site and led to more potent inhibitors of CHK2. Compounds from this series showed activity in cell-based mechanistic assays for inhibition of CHK2.

    Organizational Affiliation: 

    Cancer Research UK Centre for Cancer Therapeutics, The Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SERINE/THREONINE-PROTEIN KINASE CHK2A329Homo sapiensMutation(s): 0 
Gene Names: CHEK2, CDS1, CHK2, RAD53
EC: 2.7.11.1
Find proteins for O96017 (Homo sapiens)
Explore O96017 
Go to UniProtKB:  O96017
NIH Common Fund Data Resources
PHAROS  O96017
GTEx  ENSG00000183765
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
VGM
Query on VGM
Download CCD File 
A
4-[2-AMINO-5-(4-HYDROXY-3-METHOXYPHENYL)PYRIDIN-3-YL]BENZAMIDE
C19 H17 N3 O3
MGGHBVJICDPMQM-UHFFFAOYSA-N		 Ligand Interaction
NO3
Query on NO3
Download CCD File 
A
NITRATE ION
N O3
NHNBFGGVMKEFGY-UHFFFAOYSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
VGMIC50 :  310   nM  PDBBind
VGMIC50:  310   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.183 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.82α = 90
b = 90.82β = 90
c = 92.54γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-12-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance