2AYP

Crystal Structure of CHK1 with an Indol Inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Synthesis and biological evaluation of 3-ethylidene-1,3-dihydro-indol-2-ones as novel checkpoint 1 inhibitors

Lin, N.-H.Xia, P.Kovar, P.Park, C.Chen, Z.Zhang, H.Rosenberg, S.H.Sham, H.L.

(2006) Bioorg.Med.Chem.Lett. 16: 421-426

  • DOI: 10.1016/j.bmcl.2005.09.064

  • PubMed Abstract: 
  • Chk1 inhibitors have emerged as a novel class of neoplastic agents for abrogating the G2 DNA damage checkpoint arrest. Analogs of the Chk1 inhibitor, 3-ethylidene-1,3-dihydro-indol-2-one, were synthesized and tested in vitro for their inhibitory acti ...

    Chk1 inhibitors have emerged as a novel class of neoplastic agents for abrogating the G2 DNA damage checkpoint arrest. Analogs of the Chk1 inhibitor, 3-ethylidene-1,3-dihydro-indol-2-one, were synthesized and tested in vitro for their inhibitory activities. The most promising compound identified from this series is analog 28, which possesses potent enzymatic and cellular activities.


    Organizational Affiliation

    Cancer Research, R-47B, Global Pharmaceutical Products Division, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, IL 60064-3500, USA. nanhorng.lin@abbott.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase Chk1
A
269Homo 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
43A
Query on 43A

Download SDF File 
Download CCD File 
A
(3Z)-6-(4-HYDROXY-3-METHOXYPHENYL)-3-(1H-PYRROL-2-YLMETHYLENE)-1,3-DIHYDRO-2H-INDOL-2-ONE
C20 H16 N2 O3
AYSXURJZVXBSRV-WJDWOHSUSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
43AIC50: 7 nM (100) BINDINGDB
43AKi: 32 nM (100) BINDINGDB
43AIC50: 7 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.043α = 90.00
b = 65.698β = 94.39
c = 57.860γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data reduction
CNXrefinement
CNXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-09-12
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance