3F81

Interaction of VHR with SA3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Multidentate small-molecule inhibitors of vaccinia H1-related (VHR) phosphatase decrease proliferation of cervix cancer cells.

Wu, S.Vossius, S.Rahmouni, S.Miletic, A.V.Vang, T.Vazquez-Rodriguez, J.Cerignoli, F.Arimura, Y.Williams, S.Hayes, T.Moutschen, M.Vasile, S.Pellecchia, M.Mustelin, T.Tautz, L.

(2009) J.Med.Chem. 52: 6716-6723

  • DOI: 10.1021/jm901016k

  • PubMed Abstract: 
  • Loss of VHR phosphatase causes cell cycle arrest in HeLa carcinoma cells, suggesting that VHR inhibition may be a useful approach to halt the growth of cancer cells. We recently reported that VHR is upregulated in several cervix cancer cell lines as ...

    Loss of VHR phosphatase causes cell cycle arrest in HeLa carcinoma cells, suggesting that VHR inhibition may be a useful approach to halt the growth of cancer cells. We recently reported that VHR is upregulated in several cervix cancer cell lines as well as in carcinomas of the uterine cervix. Here we report the development of multidentate small-molecule inhibitors of VHR that inhibit its enzymatic activity at nanomolar concentrations and exhibit antiproliferative effects on cervix cancer cells. Chemical library screening was used to identify hit compounds, which were further prioritized in profiling and kinetic experiments. SAR analysis was applied in the search for analogs with improved potency and selectivity, resulting in the discovery of novel inhibitors that are able to interact with both the phosphate-binding pocket and several distinct hydrophobic regions within VHR's active site. This multidentate binding mode was confirmed by X-ray crystallography. The inhibitors decreased the proliferation of cervix cancer cells, while growth of primary normal keratinocytes was not affected. These compounds may be a starting point to develop drugs for the treatment of cervical cancer.


    Organizational Affiliation

    Infectious and Inflammatory Disease Center and Cancer Center, Burnham Institute for Medical Research, La Jolla, California 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dual specificity protein phosphatase 3
A, B
183Homo sapiensGene Names: DUSP3 (VHR)
EC: 3.1.3.48, 3.1.3.16
Find proteins for P51452 (Homo sapiens)
Go to Gene View: DUSP3
Go to UniProtKB:  P51452
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
STT
Query on STT

Download SDF File 
Download CCD File 
A, B
2-(5-methyl-4-oxo-2-thioxo-2,4-dihydro-3H-1lambda~4~,3-thiazol-3-yl)ethanesulfonic acid
C6 H9 N O4 S3
QVRJSAFJCUGTCP-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
STTIC50: 74 nM BINDINGMOAD
STTIC50: 74 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.178 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 50.406α = 90.00
b = 59.186β = 98.36
c = 60.656γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
CCP4phasing
CCP4model building
HKL-2000data collection
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance