Antioxidant protein 1, AOP-1, HBC189, Peroxiredoxin III, Prx-III, Peroxiredoxin-3, Protein MER5 homolog | AOP1
Primary ID
P30048
Links
- -
Type
protein
Relations
1
Function
Thiol-specific peroxidase that catalyzes the reduction of hydrogen peroxide and organic hydroperoxides to water and alcohols, respectively. Plays a role in cell protection against oxidative stress by detoxifying peroxides (PubMed:7733872, PubMed:17707404). Acts synergistically with MAP3K13 to regulate the activation of NF-kappa-B in the cytosol (PubMed:12492477).
Here, we show that LRRK2 interacts with human peroxiredoxin 3 (PRDX3), a mitochondrial member of the antioxidant family of thioredoxin (Trx) peroxidases. Importantly, mutations in the LRRK2 kinase domain significantly increased phosphorylation of PRDX3 compared to wild-type. The increase in PRDX3 phosphorylation was associated with decreased peroxidase activity and increased death in LRRK2-expressing but not in LRRK2-depleted or vector-transfected neuronal cells.