4AGS

Leishmania TDR1 - a unique trimeric glutathione transferase

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.149 
  • R-Value Observed: 0.152 

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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 U S A 109: 11693

  • DOI: https://doi.org/10.1073/pnas.1202593109
  • Primary Citation of Related Structures:  
    4AGS

  • 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 reveals a unique trimer of subunits each containing two glutathione-S-transferase (GST) domains ...

    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: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
THIOL-DEPENDENT REDUCTASE 1
A, B, C
471Leishmania infantumMutation(s): 0 
Gene Names: TDR1, LINJ_33_0260
UniProt
Find proteins for A4I8P2 (Leishmania infantum)
Explore A4I8P2 
Go to UniProtKB:  A4I8P2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA4I8P2
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GSH
Query on GSH
Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
L [auth B]
M [auth B]
S [auth C]
D [auth A],
E [auth A],
L [auth B],
M [auth B],
S [auth C],
T [auth C]
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
H [auth A]
I [auth A]
J [auth A]
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
U [auth C],
V [auth C],
W [auth C],
X [auth C]
1,2-ETHANEDIOL
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: 2.30 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.149 
  • R-Value Observed: 0.152 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 197.477α = 90
b = 58.396β = 111.81
c = 160.385γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
CRANKphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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