2X8I

Discovery of a Novel Class of triazolones as Checkpoint Kinase Inhibitors - Hit to Lead Exploration


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Discovery of a Novel Class of Triazolones as Checkpoint Kinase Inhibitors-Hit to Lead Exploration.

Oza, V.Ashwell, S.Brassil, P.Breed, J.Deng, C.Ezhuthachan, J.Haye, H.Horn, C.Janetka, J.Lyne, P.Newcombe, N.Otterbien, L.Pass, M.Read, J.A.Roswell, S.Su, M.Toader, D.Yu, D.Yu, Y.Valentine, A.Webborn, P.White, A.Zabludoff, S.Zheng, X.

(2010) Bioorg Med Chem 20: 5133

  • DOI: 10.1016/j.bmcl.2010.07.015
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Checkpoint Kinase-1 (Chk1, CHK1, CHEK1) is a Ser/Thr protein kinase that mediates cellular responses to DNA-damage. A novel class of Chk1 inhibitors, triazoloquinolones/triazolones (TZ's) was identified by high throughput screening. The optimization ...

    Checkpoint Kinase-1 (Chk1, CHK1, CHEK1) is a Ser/Thr protein kinase that mediates cellular responses to DNA-damage. A novel class of Chk1 inhibitors, triazoloquinolones/triazolones (TZ's) was identified by high throughput screening. The optimization of these hits to provide a lead series is described.


    Organizational Affiliation

    AstraZeneca R&D Boston, 35 Gatehouse Drive, Waltham, MA 02451, USA. Vibha.Oza@astrazeneca.com



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE-PROTEIN KINASE CHK1A289Homo sapiensMutation(s): 0 
Gene Names: CHEK1CHK1
EC: 2.7.11.1
Find proteins for O14757 (Homo sapiens)
Explore O14757 
Go to UniProtKB:  O14757
NIH Common Fund Data Resources
PHAROS  O14757
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
X8I
Query on X8I

Download CCD File 
A
7-(3-hydroxyphenyl)-5-methyl[1,2,4]triazolo[4,3-a]quinolin-1(2H)-one
C17 H13 N3 O2
UWWPFTOELGGCIL-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
X8IIC50:  190   nM  Binding MOAD
X8IIC50 :  190   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.255α = 90
b = 70.9β = 90
c = 104.241γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-08-11
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-08
    Changes: Data collection, Experimental preparation, Other
  • Version 1.4: 2019-07-24
    Changes: Data collection