4B1B

Crystal structure of Plasmodium falciparum oxidised Thioredoxin Reductase at 2.9 angstrom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.265 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structure of Plasmodium Falciparum Thioredoxin Reductase, a Validated Drug Target.

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

(2012) Biochem.Biophys.Res.Commun. 425: 806

  • DOI: 10.1016/j.bbrc.2012.07.156

  • PubMed Abstract: 
  • Plasmodium falciparum is the vector of the most prevalent and deadly form of malaria, and, among the Plasmodium species, it is the one with the highest rate of drug resistance. At the basis of a rational drug design project there is the selection and ...

    Plasmodium falciparum is the vector of the most prevalent and deadly form of malaria, and, among the Plasmodium species, it is the one with the highest rate of drug resistance. At the basis of a rational drug design project there is the selection and characterization of suitable target(s). Thioredoxin reductase, the first protection against reactive oxygen species in the erythrocytic phase of the parasite, is essential for its survival. Hence it represents a good target for the design of new anti-malarial active compounds. In this paper we present the first crystal structure of recombinant P. falciparum thioredoxin reductase (PfTrxR) at 2.9Å and discuss its differences with respect to the human orthologue. The most important one resides in the dimer interface, which offers a good binding site for selective non competitive inhibitors. The striking conservation of this feature among the Plasmodium parasites, but not among other Apicomplexa parasites neither in mammals, boosts its exploitability.


    Organizational Affiliation

    Department of Biochemical Sciences and Istituto Pasteur - Fondazione Cenci Bolognetti, Sapienza University of Rome, 00185 Rome, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THIOREDOXIN REDUCTASE
A, B
542Plasmodium falciparum (isolate FCH-5)Mutation(s): 0 
Gene Names: TR (GR)
EC: 1.8.1.9
Find proteins for Q25861 (Plasmodium falciparum (isolate FCH-5))
Go to UniProtKB:  Q25861
Small Molecules
Ligands 1 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.265 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.187α = 90.00
b = 109.242β = 90.00
c = 182.414γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-08-29
    Type: Initial release
  • Version 1.1: 2012-09-19
    Type: Database references