4AGS

Leishmania TDR1 - a unique trimeric glutathione transferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Leishmania Tdr1 Structure, a Unique Trimeric Glutathione Transferase Capable of Deglutathionylation and Antimonial Prodrug Activation.

Fyfe, P.K.Westrop, G.D.Silva, A.M.Coombs, G.H.Hunter, W.N.

(2012) Proc.Natl.Acad.Sci.USA 109: 11693

  • DOI: 10.1073/pnas.1202593109

  • PubMed Abstract: 
  • Thiol-dependent reductase I (TDR1), an enzyme found in parasitic Leishmania species and Trypanosoma cruzi, is implicated in deglutathionylation and activation of antimonial prodrugs used to treat leishmaniasis. The 2.3 Å resolution structure of TDR1 ...

    Thiol-dependent reductase I (TDR1), an enzyme found in parasitic Leishmania species and Trypanosoma cruzi, is implicated in deglutathionylation and activation of antimonial prodrugs used to treat leishmaniasis. The 2.3 Å resolution structure of TDR1 reveals a unique trimer of subunits each containing two glutathione-S-transferase (GST) domains. The similarities of individual domains and comparisons with GST classes suggest that TDR1 evolved by gene duplication, diversification, and gene fusion; a combination of events previously unknown in the GST protein superfamily and potentially explaining the distinctive enzyme properties of TDR1. The deglutathionylation activity of TDR1 implies that glutathione itself has regulatory intracellular roles in addition to being a precursor for trypanothione, the major low mass thiol present in trypanosomatids. We propose that activation of antiparasite Sb(V)-drugs is a legacy of the deglutathionylation activity of TDR1 and involves processing glutathione adducts with concomitant reduction of the metalloid to active Sb(III) species.


    Related Citations: 
    • Reduction of Anti-Leishmanial Pentavalent Antimonial Drugs by a Parasite-Specific Thiol-Dependent Reductase, Tdr1.
      Denton, H.,Mcgregor, J.C.,Coombs, G.H.
      (2004) Biochem.J. 381: 405


    Organizational Affiliation

    Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THIOL-DEPENDENT REDUCTASE 1
A, B, C
471Leishmania infantumMutation(s): 0 
Gene Names: TDR1
Find proteins for A4I8P2 (Leishmania infantum)
Go to UniProtKB:  A4I8P2
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GSH
Query on GSH

Download SDF File 
Download CCD File 
A, B, C
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B, C
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.149 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 197.477α = 90.00
b = 58.396β = 111.81
c = 160.385γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
CRANKphasing
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-04
    Type: Initial release
  • Version 1.1: 2012-07-11
    Type: Other
  • Version 1.2: 2012-08-01
    Type: Database references