SELENOS and malaria: In trypanosomes, malaria parasites, and schistosomes, thiol- and selenoproteins such as trypanothione reductase, tryparedoxin, glutathione peroxidase, selenoprotein P, and selenium-containing TrxRs have been identified as potential drug targets (Fricker et al. 2008; Krauth-Siegel et al. 2005).