4CGA

Human choline kinase a1 in complex with compound 5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of a New Binding Site on Human Choline Kinase A1: Design, Synthesis, Crystallographic Studies and Biological Evaluation of Asymmetrical Bispyridinium Derivatives

Rubio-Ruiz, B.Figuerola-Conchas, A.Ramos-Torrecillas, J.Capitan-Canadas, F.Rios-Marco, P.Carrasco, M.P.Gallo, M.A.Espinosa, A.Marco, C.Concepcion, C.Entrena-Guadix, A.Hurtado-Guerrero, R.Conejo-Garcia, A.

(2014) J.Med.Chem. 57: 507

  • DOI: 10.1021/jm401665x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human choline kinase α (CKα) is a validated drug target for the treatment of cancer. In recent years, a large number of CK inhibitors have been synthesized, and one of them is currently being evaluated in Phase I clinical trials as a treatment for so ...

    Human choline kinase α (CKα) is a validated drug target for the treatment of cancer. In recent years, a large number of CK inhibitors have been synthesized, and one of them is currently being evaluated in Phase I clinical trials as a treatment for solid tumors. Here we have evaluated a new series of asymmetrical biscationic CK inhibitors by means of enzymatic, crystallographic, and antitumor studies. We demonstrate that one of these structures adopts a completely new binding mode not observed before inducing the aperture of an adjacent binding site. This compound shows antiproliferative and apoptotic effects on cancer cells through activation of caspase-3. Therefore, this study not only provides fruitful insights into the design of more efficient compounds that may target different regions in CKα1 but also explains how these compounds induce apoptosis in cancer cells.


    Organizational Affiliation

    Departamento de Química Farmacéutica y Orgánica, Facultad de Farmacia, Universidad de Granada , Campus de Cartuja s/n, 18071 Granada, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHOLINE KINASE ALPHA
A
383Homo sapiensMutation(s): 0 
Gene Names: CHKA (CHK, CKI)
EC: 2.7.1.32
Find proteins for P35790 (Homo sapiens)
Go to Gene View: CHKA
Go to UniProtKB:  P35790
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
QLW
Query on QLW

Download SDF File 
Download CCD File 
A
N,N-dimethyl-1-[[4-(2-phenylethyl)phenyl]methyl]pyridin-1-ium-4-amine
C22 H25 N2
NVUQPNNHWAKUOG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.211 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 61.512α = 90.00
b = 61.512β = 90.00
c = 220.597γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
MOLREPphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2014-01-15
    Type: Initial release
  • Version 1.1: 2014-02-05
    Type: Database references