2V6O

Structure of Schistosoma mansoni Thioredoxin-Glutathione Reductase (SmTGR)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Glutathione Reductase and Thioredoxin Reductase at the Crossroad: The Structure of Schistosoma Mansoni Thioredoxin Glutathione Reductase

Angelucci, F.Miele, A.E.Boumis, G.Dimastrogiovanni, D.Brunori, M.Bellelli, A.

(2008) Proteins 72: 936

  • DOI: https://doi.org/10.1002/prot.21986
  • Primary Citation of Related Structures:  
    2V6O

  • PubMed Abstract: 

    Thioredoxin glutathione reductase (TGR) is a key flavoenzyme expressed by schistosomes that bridges two detoxification pathways crucial for the parasite survival in the host's organism. In this article we report the crystal structure (at 2.2 A resolution) of TGR from Schistosoma mansoni (SmTGR), deleted in the last two residues. The structure reveals the peculiar architecture of this chimeric enzyme: the small Glutaredoxin (Grx) domain at the N-terminus is joined to the large thioredoxin reductase (TR) one via an extended complementary surface, involving residues not conserved in the Grx superfamily; the TR domain interacts with an identical partner via its C-terminal domain, forming a dimer with a twisted "W" shape. Although lacking the penultimate Selenocysteine residue (Sec), the enzyme is still able to reduce oxidized glutathione. These data update the interpretation of the interdomain communication in TGR enzymes. The possible function of this enzyme in pathogenic parasites is discussed.


  • Organizational Affiliation

    Department of Biochemical Sciences A Rossi Fanelli, Istituto Pasteur Fondazione Cenci-Bolognetti and CNR Institute of Molecular Biology and Pathology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
THIOREDOXIN GLUTATHIONE REDUCTASE596Schistosoma mansoniMutation(s): 0 
EC: 1.6.4.5
UniProt
Find proteins for Q962Y6 (Schistosoma mansoni)
Explore Q962Y6 
Go to UniProtKB:  Q962Y6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ962Y6
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.324α = 90
b = 102.533β = 112.63
c = 59.027γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-03-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description