3OT8

X-ray crystal structure of compound 17r bound to human Chk1 kinase domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery of pyrazolo[1,5-a]pyrimidine-based CHK1 inhibitors: A template-based approach-Part 1.

Dwyer, M.P.Paruch, K.Labroli, M.Alvarez, C.Keertikar, K.M.Poker, C.Rossman, R.Fischmann, T.O.Duca, J.S.Madison, V.Parry, D.Davis, N.Seghezzi, W.Wiswell, D.Guzi, T.J.

(2011) Bioorg Med Chem Lett 21: 467-470

  • DOI: 10.1016/j.bmcl.2010.10.113
  • Primary Citation of Related Structures:  
    3OT8

  • PubMed Abstract: 
  • The synthesis and hit-to-lead SAR development of a pyrazolo[1,5-a]pyrimidine hit 4 is described leading to a series of potent, selective CHK1 inhibitors such as compound 17r. In the Letter, the further utility of the pyrazolo[1,5-a]pyrimidine template fo ...

    The synthesis and hit-to-lead SAR development of a pyrazolo[1,5-a]pyrimidine hit 4 is described leading to a series of potent, selective CHK1 inhibitors such as compound 17r. In the Letter, the further utility of the pyrazolo[1,5-a]pyrimidine template for the development of potent, selective kinase inhibitors is detailed.


    Organizational Affiliation

    Merck Research Laboratories, 2015 Galloping Hill Rd, Kenilworth, NJ 07033, USA. michael.dwyer@merck.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase Chk1 A273Homo 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
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MI5
Query on MI5

Download Ideal Coordinates CCD File 
A
N-(3-methylisothiazol-5-yl)-3-(1-methyl-1H-pyrazol-4-yl)-5-[(3R)-piperidin-3-yl]pyrazolo[1,5-a]pyrimidin-7-amine
C19 H22 N8 S
GZPYWHILDNLCNY-CYBMUJFWSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
MI5IC50:  9   nM  BindingDB
MI5IC50:  9   nM  Binding MOAD
MI5IC50 :  9   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.78α = 90
b = 65.63β = 94.78
c = 57.64γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
BUSTERrefinement
DENZOdata reduction
SCALEPACKdata scaling
BUSTERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2010-09-10 
  • Released Date: 2010-11-10 
  • Deposition Author(s): Fischmann, T.O.

Revision History 

  • Version 1.0: 2010-11-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance