2XC2

Crystal structure of oxidized Schistosoma mansoni Thioredoxin pre- protein at 1.6 Angstrom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.56 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and Functional Characterization of Schistosoma Mansoni Thioredoxin.

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

(2011) Protein Sci. 20: 1069

  • DOI: 10.1002/pro.634
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Schistosomiasis, the human parasitosis caused by various species of the blood-fluke Schistosoma, is a debilitating disease affecting 200 million people in tropical areas. The massive administration of the only effective drug, praziquantel, leads to t ...

    Schistosomiasis, the human parasitosis caused by various species of the blood-fluke Schistosoma, is a debilitating disease affecting 200 million people in tropical areas. The massive administration of the only effective drug, praziquantel, leads to the appearance of less sensitive parasite strains, thus, making urgent the search for new therapeutic approaches and new suitable targets. The thiol-mediated detoxification pathway has been identified as a promising target, being essential during all the parasite developmental stages and sufficiently different from the host counterpart. As a part of a project aimed at the structural characterization of all the proteins involved in this pathway, we describe hereby the high-resolution crystal structure of Schistosoma mansoni Thioredoxin (SmTrx) in three states, namely: the wild-type oxidized adult enzyme and the oxidized and reduced forms of a juvenile isoform, carrying an N-terminal extension. SmTrx shows a typical thioredoxin fold, highly similar to the other components of the superfamily. Although probably unlikely to be a reasonable drug target given its high similarity with the human counterpart, SmTrx completes the characterization of the whole set of thiol-mediated detoxification pathway components. Moreover, it can reduce oxidized glutathione and is one of the few defence proteins expressed in mature eggs and in the hatch fluid, thus confirming an important role in the parasite. We believe its crystal structure may provide clues for the formation of granulomas and the pathogenesis of the chronic disease.


    Organizational Affiliation

    Dipartimento di Scienze Biochimiche and Istituto Pasteur-Fondazione Cenci Bolognetti, "Sapienza" University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THIOREDOXINN
A
117Schistosoma mansoniMutation(s): 1 
Find proteins for Q8T9N5 (Schistosoma mansoni)
Go to UniProtKB:  Q8T9N5
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.56 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 33.931α = 90.00
b = 51.998β = 90.00
c = 59.313γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-08-11
    Type: Initial release
  • Version 1.1: 2012-04-25
    Type: Database references, Other, Refinement description, Version format compliance