CDK2 in complex with the imidazole pyrimidine amide, compound (S)-8b

Experimental Data Snapshot

  • Resolution: 2.15 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 

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This is version 1.2 of the entry. See complete history


The Discovery of Azd5597, a Potent Imidazole Pyrimidine Amide Cdk Inhibitor Suitable for Intravenous Dosing.

Jones, C.D.Andrews, D.M.Barker, A.J.Blades, K.Daunt, P.East, S.Geh, C.Graham, M.A.Johnson, K.M.Loddick, S.A.Mcfarland, H.M.Mcgregor, A.Moss, L.Rudge, D.A.Simpson, P.B.Swain, M.L.Tam, K.Y.Tucker, J.A.Walker, M.

(2008) Bioorg Med Chem Lett 18: 6369

  • DOI: https://doi.org/10.1016/j.bmcl.2008.10.102
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The development of a novel series of imidazole pyrimidine amides as cyclin-dependent kinase (CDK) inhibitors is described. Optimisation of inhibitory potency against multiple CDK's (1, 2 and 9) resulted in imidazole pyrimidine amides with potent in vitro anti-proliferative effects against a range of cancer cell lines. Excellent physiochemical properties and large margins against inhibition of CYP isoforms and the hERG ion channel were achieved by modification of lipophilicity and amine basicity. A candidate with disease model activity in human cancer cell line xenografts and with suitable physiochemical and pharmacokinetic profiles for intravenous (i.v.) dosing was selected for further development as AZD5597.

  • Organizational Affiliation

    Cancer and Infection Research, AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield, Cheshire SK10 4TG, UK. cliff.jones@astrazeneca.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CELL DIVISION PROTEIN KINASE 2299Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P24941 (Homo sapiens)
Explore P24941 
Go to UniProtKB:  P24941
GTEx:  ENSG00000123374 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP24941
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on I19

Download Ideal Coordinates CCD File 
C [auth A]N-(4-{[(3S)-3-(dimethylamino)pyrrolidin-1-yl]carbonyl}phenyl)-5-fluoro-4-[2-methyl-1-(1-methylethyl)-1H-imidazol-5-yl]pyrimidin-2-amine
C24 H30 F N7 O
Query on ACT

Download Ideal Coordinates CCD File 
C2 H3 O2
Binding Affinity Annotations 
IDSourceBinding Affinity
I19 PDBBind:  2W17 IC50: 2 (nM) from 1 assay(s)
BindingDB:  2W17 IC50: 2 (nM) from 1 assay(s)
Binding MOAD:  2W17 IC50: 2 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.15 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.542α = 90
b = 71.824β = 90
c = 71.771γ = 90
Software Package:
Software NamePurpose
CrystalCleardata reduction
CrystalCleardata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2008-11-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-04-24
    Changes: Data collection, Derived calculations, Other, Source and taxonomy