4L5B

Human dCK C4S-S74E mutant in complex with UDP and the DI-43 inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Development of new deoxycytidine kinase inhibitors and noninvasive in vivo evaluation using positron emission tomography.

Murphy, J.M.Armijo, A.L.Nomme, J.Lee, C.H.Smith, Q.A.Li, Z.Campbell, D.O.Liao, H.I.Nathanson, D.A.Austin, W.R.Lee, J.T.Darvish, R.Wei, L.Wang, J.Su, Y.Damoiseaux, R.Sadeghi, S.Phelps, M.E.Herschman, H.R.Czernin, J.Alexandrova, A.N.Jung, M.E.Lavie, A.Radu, C.G.

(2013) J Med Chem 56: 6696-6708

  • DOI: 10.1021/jm400457y
  • Primary Citation of Related Structures:  
    4L5B, 4JLK

  • PubMed Abstract: 
  • Combined inhibition of ribonucleotide reductase and deoxycytidine kinase (dCK) in multiple cancer cell lines depletes deoxycytidine triphosphate pools leading to DNA replication stress, cell cycle arrest, and apoptosis. Evidence implicating dCK in ca ...

    Combined inhibition of ribonucleotide reductase and deoxycytidine kinase (dCK) in multiple cancer cell lines depletes deoxycytidine triphosphate pools leading to DNA replication stress, cell cycle arrest, and apoptosis. Evidence implicating dCK in cancer cell proliferation and survival stimulated our interest in developing small molecule dCK inhibitors. Following a high throughput screen of a diverse chemical library, a structure-activity relationship study was carried out. Positron Emission Tomography (PET) using (18)F-L-1-(2'-deoxy-2'-FluoroArabinofuranosyl) Cytosine ((18)F-L-FAC), a dCK-specific substrate, was used to rapidly rank lead compounds based on their ability to inhibit dCK activity in vivo. Evaluation of a subset of the most potent compounds in cell culture (IC50 = ∼1-12 nM) using the (18)F-L-FAC PET pharmacodynamic assay identified compounds demonstrating superior in vivo efficacy.


    Organizational Affiliation

    Department of Molecular and Medical Pharmacology, §Ahmanson Translational Imaging Division, ⊥Department of Chemistry and Biochemistry, #California NanoSystems Institute, △Department of Biological Chemistry, University of California, Los Angeles , 650 Charles E. Young Dr. S., Los Angeles, California 90095, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Deoxycytidine kinaseAB280Homo sapiensMutation(s): 5 
Gene Names: DCK
EC: 2.7.1.74 (PDB Primary Data), 2.7.1.76 (UniProt), 2.7.1.113 (UniProt)
Find proteins for P27707 (Homo sapiens)
Explore P27707 
Go to UniProtKB:  P27707
NIH Common Fund Data Resources
PHAROS  P27707
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1UX
Query on 1UX

Download CCD File 
A, B
1-[5-(4-{[(4,6-diaminopyrimidin-2-yl)sulfanyl]methyl}-5-propyl-1,3-thiazol-2-yl)-2-methoxyphenoxy]-2-methylpropan-2-ol
C22 H29 N5 O3 S2
PWASXBOUTAWHOZ-UHFFFAOYSA-N
 Ligand Interaction
UDP
Query on UDP

Download CCD File 
A, B
URIDINE-5'-DIPHOSPHATE
C9 H14 N2 O12 P2
XCCTYIAWTASOJW-XVFCMESISA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1UXKi:  0.800000011920929   nM  BindingDB
1UXIC50:  1.399999976158142   nM  BindingDB
1UXIC50:  15   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.671α = 90
b = 68.671β = 90
c = 120.019γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
MOLREPphasing
REFMACrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-06-10 
  • Released Date: 2013-09-18 
  • Deposition Author(s): Nomme, J., Lavie, A.

Revision History 

  • Version 1.0: 2013-09-18
    Type: Initial release
  • Version 1.1: 2013-11-27
    Changes: Database references