4B1B

Crystal structure of Plasmodium falciparum oxidised Thioredoxin Reductase at 2.9 angstrom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.266 

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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
  • Primary Citation of Related Structures:  
    4B1B

  • 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 characterization of suitable target(s) ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
THIOREDOXIN REDUCTASEA, B542Plasmodium falciparumMutation(s): 0 
EC: 1.8.1.9
UniProt
Find proteins for Q25861 (Plasmodium falciparum (isolate FCH-5))
Explore Q25861 
Go to UniProtKB:  Q25861
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD (Subject of Investigation/LOI)
Query on FAD

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.266 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.187α = 90
b = 109.242β = 90
c = 182.414γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

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