InterPro : IPR000866

Name  Alkyl hydroperoxide reductase subunit C/ Thiol specific antioxidant Short Name  AhpC/TSA
Type  Domain Description  Peroxiredoxins (Prxs) are a ubiquitous family of antioxidant enzymes that also control cytokine-induced peroxide levels which mediate signal transduction in mammalian cells. Prxs can be regulated by changes to phosphorylation, redox and possibly oligomerisation states. Prxs are divided into three classes: typical 2-Cys Prxs; atypical 2-Cys Prxs; and 1-Cys Prxs. All Prxs share the same basic catalytic mechanism, in which an active-site cysteine (the peroxidatic cysteine) is oxidised to a sulphenic acid by the peroxide substrate. The recycling of the sulphenic acid back to a thiol is what distinguishes the three enzyme classes. Using crystal structures, a detailed catalytic cycle has been derived for typical 2-Cys Prxs, including a model for the redox-regulated oligomeric state proposed to control enzyme activity [].Alkyl hydroperoxide reductase (AhpC) is responsible for directly reducing organic hyperoxides in its reduced dithiol form. Thiol specific antioxidant (TSA) is a physiologically important antioxidant which constitutes an enzymatic defence against sulphur-containing radicals. This family contains AhpC and TSA, as well as related proteins.

Sequence Features

GO Displayer


InterPro protein domain ID --> Contigs



0 Child Features

0 Contains

2 Found In

Id Name Short Name Type
IPR017559 Alkyl hydroperoxide reductase subunit C AhpC Family
IPR013478 Methylamine dehydrogenase accessory protein MauD MeN_DH_accessory Family

1 Parent Features

Id Name Short Name Type
IPR012336 Thioredoxin-like fold Thioredoxin-like_fold Domain

1 Publications

First Author Title Year Journal Volume Pages
Wood ZA Structure, mechanism and regulation of peroxiredoxins. 2003 Trends Biochem Sci 28 32-40

To cite PlanMine, please refer to the following publication:

Rozanski, A., Moon, H., Brandl, H., Martín-Durán, J. M., Grohme, M., Hüttner, K., Bartscherer, K., Henry, I., & Rink, J. C.
PlanMine 3.0—improvements to a mineable resource of flatworm biology and biodiversity
Nucleic Acids Research, gky1070. doi:10.1093/nar/gky1070 (2018)