4CG8

Human choline kinase a1 in complex with compound 14


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.203 

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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
G8S
Query on G8S

Download SDF File 
Download CCD File 
A
4-[(4-chlorophenyl)(methyl)amino]-1-{4-[4-(4-{[4-(dimethylamino)pyridinium-1-yl]methyl}phenyl)butyl]benzyl}pyridinium
C37 H41 Cl N4
YOFBQJDVODUYIM-UHFFFAOYSA-N
 Ligand Interaction
G8V
Query on G8V

Download SDF File 
Download CCD File 
A
1-benzyl-4-(dimethylamino)pyridinium
C14 H17 N2
WFCLXYFMXYSPQT-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
G8SIC50: 1200 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.203 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 61.554α = 90.00
b = 61.554β = 90.00
c = 221.113γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
SCALEPACKdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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