4HYI

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.399 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.182 

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:  

  • 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 g ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase Chk1
A
289Homo sapiensMutation(s): 0 
Gene Names: CHEK1 (CHK1)
EC: 2.7.11.1
Find proteins for O14757 (Homo sapiens)
Go to Gene View: CHEK1
Go to UniProtKB:  O14757
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1AO
Query on 1AO

Download SDF File 
Download 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 SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1AOEC50: 750 nM (100) BINDINGDB
1AOIC50: 2 nM (100) BINDINGDB
1AOIC50: 2 nM BINDINGMOAD
1AOIC50: 3 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.399 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.182 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 44.910α = 90.00
b = 65.940β = 94.14
c = 57.910γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
MAR345dtbdata collection
BUSTERrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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

Revision History 

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