2WIP

STRUCTURE OF CDK2-CYCLIN A COMPLEXED WITH 8-ANILINO-1-METHYL-4,5-DIHYDRO- 1H-PYRAZOLO[4,3-H] QUINAZOLINE-3-CARBOXYLIC ACID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Identification of N,1,4,4-Tetramethyl-8-{[4-(4-Methylpiperazin-1-Yl)Phenyl]Amino}-4,5-Dihydro-1H-Pyrazolo[4,3-H]Quinazoline-3-Carboxamide (Pha-848125), a Potent, Orally Available Cyclin Dependent Kinase Inhibitor.

Brasca, M.G.Amboldi, N.Ballinari, D.Cameron, A.Casale, E.Cervi, G.Colombo, M.Colotta, F.Croci, V.D'Alessio, R.Fiorentini, F.Isacchi, A.Mercurio, C.Moretti, W.Panzeri, A.Pastori, W.Pevarello, P.Quartieri, F.Roletto, F.Traquandi, G.Vianello, P.Vulpetti, A.Ciomei, M.

(2009) J.Med.Chem. 52: 5152

  • DOI: 10.1021/jm9006559
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The discovery of a novel class of inhibitors of cyclin dependent kinases (CDKs) is described. Starting from compound 1, showing good potency as inhibitor of CDKs but being poorly selective against a panel of serine-threonine and tyrosine kinases, new ...

    The discovery of a novel class of inhibitors of cyclin dependent kinases (CDKs) is described. Starting from compound 1, showing good potency as inhibitor of CDKs but being poorly selective against a panel of serine-threonine and tyrosine kinases, new analogues were synthesized. Enhancement in selectivity, antiproliferative activity against A2780 human ovarian carcinoma cells, and optimization of the physical properties and pharmacokinetic profile led to the identification of highly potent and orally available compounds. Compound 28 (PHA-848125), which in the preclinical xenograft A2780 human ovarian carcinoma model showed good efficacy and was well tolerated upon repeated daily treatments, was identified as a drug candidate for further development. Compound 28 is currently undergoing phase I and phase II clinical trials.


    Organizational Affiliation

    Business Unit Oncology, Nerviano Medical Sciences Srl, Viale Pasteur 10, 20014 Nerviano (MI), Italy. gabriella.brasca@nervianoms.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CELL DIVISION PROTEIN KINASE 2
A, C
309Homo sapiensGene Names: CDK2 (CDKN2)
EC: 2.7.11.22
Find proteins for P24941 (Homo sapiens)
Go to Gene View: CDK2
Go to UniProtKB:  P24941
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CYCLIN-A2
B, D
265Homo sapiensGene Names: CCNA2 (CCN1, CCNA)
Find proteins for P20248 (Homo sapiens)
Go to Gene View: CCNA2
Go to UniProtKB:  P20248
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
P49
Query on P49

Download SDF File 
Download CCD File 
A, C
1-methyl-8-(phenylamino)-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxylic acid
C17 H15 N5 O2
ZOBRPBVIEUWYJR-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
P49IC50: 3 nM (98) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.221 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 184.185α = 90.00
b = 184.185β = 90.00
c = 215.005γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2009-07-28
    Type: Initial release
  • Version 1.1: 2012-10-10
    Type: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Version format compliance