4HYH

X-RAY Crystal structure of compound 39 bound to human chk1 kinase domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.1 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 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1AM
Query on 1AM

Download SDF File 
Download CCD File 
A
2-(6-methoxy-1-oxo-1,3-dihydro-2H-isoindol-2-yl)-N-[4-(piperazin-1-yl)pyridin-3-yl]-1,3-thiazole-4-carboxamide
C22 H22 N6 O3 S
KLJVDMAOKMSBQX-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1AMIC50: 1 - 3.7 nM (100) BINDINGDB
1AMEC50: 30 nM (100) BINDINGDB
1AMIC50: 1 nM BINDINGMOAD
1AMIC50: 1 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.203 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 44.970α = 90.00
b = 65.960β = 102.39
c = 54.420γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata collection
SCALEPACKdata scaling
BUSTERrefinement
DENZOdata reduction
BUSTERphasing

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