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- Title
Disruption of the Plasmodium falciparum 2-Cys peroxiredoxin gene renders parasites hypersensitive to reactive oxygen and nitrogen species
- Authors
Komaki-Yasuda, Kanako; Kawazu, Shin-ichiro; Kano, Shigeyuki
- Abstract
In parasitism, Plasmodium falciparum is exposed to toxic reactive oxygen species and reactive nitrogen species (RNS). Peroxiredoxins (Prx) are ubiquitously distributed antioxidant enzymes. In bacteria and yeast, Prx have also been implicated in detoxifying RNS. Here, we used a gene targeting strategy to investigate the physiological role of 2-Cys Prx of P. falciparum, PfTPx-1, in living parasite cells. The PfTPx-1-null parasite line was more sensitive to paraquat (a superoxide donor) and sodium nitroprusside (a nitric oxide donor), than wildtype. These findings suggest that PfTPx-1 protects the parasite cells from oxidative and nitrosative stresses.
- Subjects
PLASMODIUM; NITROGEN; ANTIOXIDANTS
- Publication
FEBS Letters, 2003, Vol 547, Issue 1-3, p140
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/S0014-5793(03)00694-X