Thiol-Specific Antioxidant 1 is an alias for the gene, Peroxiredoxin 2, in humans. Other names include: Peroxiredoxin-2; NKEF-B; Thiol-specific antioxidant protein; TSA; Thioredoxin peroxidase 1; Thioredoxin-dependent peroxide reductase 1; Natural killer cell-enhancing factor B; Peroxiredoxin-2 ; thiol-specific antioxidant 1; natural killer-enhancing factor B; torin; HEL-S-2a; NKEFB; PRXII; TDPX1. The encoded protein is an enzyme with an amino acid length of 198 and a mass of 21.9 kDa. Thiol-Specific Antioxidant 1 is a member of the AhpC/TSA family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog.