2GHG

h-CHK1 complexed with A431994

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.240 

wwPDB Validation   3D Report Full Report


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


Literature

Discovery and SAR of oxindole-pyridine-based protein kinase B/Akt inhibitors for treating cancers.

Zhu, G.D., Gandhi, V.B., Gong, J., Luo, Y., Liu, X., Shi, Y., Guan, R., Magnone, S.R., Klinghofer, V., Johnson, E.F., Bouska, J., Shoemaker, A., Oleksijew, A., Jarvis, K., Park, C., De Jong, R., Oltersdorf, T., Li, Q., Rosenberg, S.H., Giranda, V.L.

(2006) Bioorg Med Chem Lett 16: 3424-3429

  • DOI: 10.1016/j.bmcl.2006.04.005
  • Primary Citation of Related Structures:  
    2GHG

  • PubMed Abstract: 

    • We describe a series of potent and selective oxindole-pyridine-based protein kinase B/Akt inhibitors. The most potent compound 11n in this series demonstrated an IC(50) of 0.17nM against Akt1 and more than 100-fold selectivity over other Akt isozymes. The selectivity against other protein kinases was highly dependent on the C-3 substitutions at the oxindole scaffold, with unsubstituted 9e or 3-furan-2-ylmethylene (11n) more selective and 3-(1H-pyrrol-2-yl)methylene (11f) or 3-(1H-imidazol-2-yl)methylene (11k) less selective ...

    We describe a series of potent and selective oxindole-pyridine-based protein kinase B/Akt inhibitors. The most potent compound 11n in this series demonstrated an IC(50) of 0.17nM against Akt1 and more than 100-fold selectivity over other Akt isozymes. The selectivity against other protein kinases was highly dependent on the C-3 substitutions at the oxindole scaffold, with unsubstituted 9e or 3-furan-2-ylmethylene (11n) more selective and 3-(1H-pyrrol-2-yl)methylene (11f) or 3-(1H-imidazol-2-yl)methylene (11k) less selective. In a mouse xenograft model, 9d, 11f, and 11n inhibited tumor growth but with accompanying toxicity.

    Organizational Affiliation: 

    Cancer Research, GPRD, Abbott Laboratories, Abbott Park, IL 60064, USA. gui-dong.zhu@abbott.com



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase Chk1A269Homo sapiensMutation(s): 0 
Gene Names: CHEK1, CHK1
EC: 2.7.1.37 (PDB Primary Data), 2.7.11.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for O14757 (Homo sapiens)
Explore O14757 
Go to UniProtKB:  O14757
PHAROS:  O14757
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14757
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A53
Query on A53
Download Ideal Coordinates CCD File 
B [auth A]5-{5-[(S)-2-AMINO-3-(1H-INDOL-3-YL)-PROPOXYL]-PYRIDIN-3-YL}-3-[1-(1H-PYRROL-2-YL)-METH-(Z)-YLIDENE]-1,3-DIHYDRO-INDOL-2-ONE
C29 H25 N5 O2
DQMKXCKXZQEVJU-VHLXNKDGSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
A53 BindingDB:  2GHG Ki: 126 (nM) from 1 assay(s)
PDBBind:  2GHG IC50: 1.5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.240 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.162α = 90
b = 66.087β = 94.81
c = 58.492γ = 90
Software Package:
Software NamePurpose
CNXrefinement
DENZOdata reduction
HKL-2000data scaling
CNXphasing

Structure Validation

View Full Validation Report



View more in-depth experimental data
Entry History 

Deposition Data

  • Released Date: 2007-03-27 
    • Deposition Author(s): Park, C.

Revision History  (Full details and data files)

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance