3UL3

Structural insights into thioredoxin-2: a component of malaria parasite protein secretion machinery


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural insights into thioredoxin-2: a component of malaria parasite protein secretion machinery.

Sharma, A.Sharma, A.Dixit, S.Sharma, A.

(2011) Sci Rep 1: 179-179

  • DOI: 10.1038/srep00179
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Thioredoxins are vital components of Plasmodium proteome and act as both reducing agents and protein disulfide reductases. The malaria parasite P. falciparum thioredoxin-2 (PfTrx-2) is part of the multi-protein complex embedded within the parasite pa ...

    Thioredoxins are vital components of Plasmodium proteome and act as both reducing agents and protein disulfide reductases. The malaria parasite P. falciparum thioredoxin-2 (PfTrx-2) is part of the multi-protein complex embedded within the parasite parasitophorous vacuolar membrane (PVM) which purportedly directs protein secretion. We have characterized structural and enzymatic features of PfTrx-2, and we show that PfTrx-2 adopts a canonical thioredoxin fold but with significant structural differences in its N-terminus. Our confocal localization data suggest distinct PVM residency of PfTrx-2. Based on the crystal structure of PfTrx-2, we screened and tested small molecule drug-like libraries for compounds which target unique structural features of PfTrx-2. Disruption of PfTrx-2 interactions using specific inhibitors may result in a dysfunctional parasite translocon that is rendered unable to secrete pathogenic proteins into hosts. This approach therefore offers a new focus for anti-malarial drug development.


    Organizational Affiliation

    Structural and Computational Biology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB) , Aruna Asaf Ali Road, New Delhi, 110067, India.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin
A, B
128Plasmodium falciparum 3D7Mutation(s): 0 
Gene Names: MAL13P1.225trx2PF3D7_1345100
Find proteins for Q8IDP4 (Plasmodium falciparum (isolate 3D7))
Go to UniProtKB:  Q8IDP4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.261 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.046α = 90
b = 87.046β = 90
c = 90.904γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-14
    Type: Initial release
  • Version 1.1: 2017-11-08
    Changes: Refinement description
  • Version 1.2: 2019-12-25
    Changes: Database references