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Updated: Jul 19, 2026

Fast and Specific Assessment of the Halogenating Peroxidase Activity in Leukocyte-enriched Blood Samples
Published on: July 28, 2016
Peroxidoxins: a new antioxidant family
S McGonigle1, J P Dalton, E R James
1Department of Ophthalmology, Medical University of South Carolina, 171 Ashley Ave, Charleston, SC 29425, USA.
Abstract:
Peroxidoxins are a recently described family of antioxidants. They have an ancient origin, being present in organisms as primitive as the archaea, and they appear to be ubiquitous in living cells. Here, Sharon McGonigle, John Dalton and Eric James review the present understanding of the functions and mechanism of action of these enzymes and suggest that these antioxidants may represent the ;missing link' in the metabolism of reactive oxygen species by some protozoan and helminth parasites. Also, by performing sequence comparisons of homologues entered in the public databases, they have classified the parasite peroxidoxins as 1-cys or 2-cys enzymes. The discovery of these antioxidants may change our understanding of how reactive oxygen species, of parasite or host origin, are managed by parasites.
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