4HYI

X-RAY Crystal structure of compound 40 bound to human chk1 kinase domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report


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


Literature

Structure-based design and optimization of 2-aminothiazole-4-carboxamide as a new class of CHK1 inhibitors.

Huang, X., Cheng, C.C., Fischmann, T.O., Duca, J.S., Richards, M., Tadikonda, P.K., Reddy, P.A., Zhao, L., Arshad Siddiqui, M., Parry, D., Davis, N., Seghezzi, W., Wiswell, D., Shipps, G.W.

(2013) Bioorg Med Chem Lett 23: 2590-2594

  • DOI: 10.1016/j.bmcl.2013.02.108
  • Primary Citation of Related Structures:  
    4HYH, 4HYI

  • PubMed Abstract: 

    • Drug design efforts in the emerging 2-aminothiazole-4-carboxamide class of CHK1 inhibitors have uncovered specific combinations of key substructures within the molecule; resulting in significant improvements in cell-based activity while retaining a greater than one hundred-fold selectivity against CDK2 ...

    Drug design efforts in the emerging 2-aminothiazole-4-carboxamide class of CHK1 inhibitors have uncovered specific combinations of key substructures within the molecule; resulting in significant improvements in cell-based activity while retaining a greater than one hundred-fold selectivity against CDK2. The X-ray crystal structure of a complex between compound 39 and the CHK1 protein detailing a 'U-shaped' topology and key interactions with the protein surface at the ATP site is also reported.

    Organizational Affiliation: 

    Merck Research Laboratories, 320 Bent Street, Cambridge, MA 02141, USA. xiaohua.huang@merck.com



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase Chk1 A289Homo sapiensMutation(s): 0 
Gene Names: CHEK1, CHK1
EC: 2.7.11.1
Find proteins for O14757 (Homo sapiens)
Explore O14757 
Go to UniProtKB:  O14757
NIH Common Fund Data Resources
PHAROS:  O14757
GTEx:  ENSG00000149554
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1AO
Query on 1AO
Download Ideal Coordinates CCD File 
A
2-(1H-indazol-1-yl)-N-[2-(piperazin-1-yl)phenyl]-1,3-thiazole-4-carboxamide
C21 H20 N6 O S
WQIZBWOPEUALCL-UHFFFAOYSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1AOEC50:  750   nM  BindingDB
1AOIC50 :  3   nM  PDBBind
1AOIC50:  2   nM  Binding MOAD
1AOIC50:  2   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.91α = 90
b = 65.94β = 94.14
c = 57.91γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
BUSTERrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2012-11-13 
  • Released Date: 2013-03-06 
    • Deposition Author(s): Fischmann, T.O.

Revision History  (Full details and data files)

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2013-05-01
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description