1AOG

TRYPANOSOMA CRUZI TRYPANOTHIONE REDUCTASE (OXIDIZED FORM)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of trypanothione reductase from the human pathogen Trypanosoma cruzi at 2.3 A resolution.

Zhang, Y.Bond, C.S.Bailey, S.Cunningham, M.L.Fairlamb, A.H.Hunter, W.N.

(1996) Protein Sci. 5: 52-61

  • DOI: 10.1002/pro.5560050107

  • PubMed Abstract: 
  • Trypanothione reductase (TR) is an NADPH-dependent flavoprotein unique to protozoan parasites from the genera Trypanosoma and Leishmania and is an important target for the design of improved trypanocidal drugs. We present details of the structure of ...

    Trypanothione reductase (TR) is an NADPH-dependent flavoprotein unique to protozoan parasites from the genera Trypanosoma and Leishmania and is an important target for the design of improved trypanocidal drugs. We present details of the structure of TR from the human pathogen Trypanosoma cruzi, the agent responsible for Chagas' disease or South American trypanosomiasis. The structure has been solved by molecular replacement, using as the starting model the structure of the enzyme from the nonpathogenic Crithidia fasciculata, and refined to an R-factor of 18.9% for 53,868 reflections with F > or = sigma F between 8.0 and 2.3 A resolution. The model comprises two subunits (968 residues), two FAD prosthetic groups, two maleate ions, and 419 water molecules. The accuracy and geometry of the enzyme model is improved with respect to the C. fasciculata enzyme model. The new structure is described and specific features of the enzyme involved in substrate interactions are compared with previous models of TR and related glutathione reductases from human and Escherichia coli. Structural differences at the edge of the active sites suggest an explanation for the differing specificities toward glutathionylspermidine disulfide.


    Related Citations: 
    • Site-Directed Mutagenesis of the Redox-Active Cysteines of Trypanosoma Cruzi Trypanothione Reductase
      Borges, A.,Cunningham, M.L.,Tovar, J.,Fairlamb, A.H.
      (1995) Eur.J.Biochem. 228: 745
    • Trypanosoma Cruzi Trypanothione Reductase Crystallisation, Unit Cell Dimensions and Structure Solution
      Zhang, Y.,Bailey, S.,Naismith, J.H.,Bond, C.S.,Habash, J.,Mclaughlin, P.,Papiz, M.Z.,Borges, A.,Cunningham, M.L.,Fairlamb, A.H.,Hunter, W.N.
      (1993) J.Mol.Biol. 233: 1217


    Organizational Affiliation

    Department of Chemistry, University of Manchester, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRYPANOTHIONE REDUCTASE
A, B
485Trypanosoma cruziGene Names: TPR
EC: 1.8.1.12
Find proteins for P28593 (Trypanosoma cruzi)
Go to Gene View: TPR
Go to UniProtKB:  P28593
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A, B
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
MAE
Query on MAE

Download SDF File 
Download CCD File 
A
MALEIC ACID
C4 H4 O4
VZCYOOQTPOCHFL-UPHRSURJSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.189 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 92.810α = 90.00
b = 92.810β = 90.00
c = 156.690γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
CCP4data reduction
X-PLORmodel building
MOSFLMdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-09-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance