Anti-Peroxiredoxin 4/PRDX4 Antibody Picoband® Fluoro488 Conjugated

PRDX4 (peroxiredoxin 4) is also known as AOE37-2. The protein encoded by this gene is an antioxidant enzyme and belongs to the peroxiredoxin family. Functional analysis showed that PRDX4 protects glutamine synthetase from inactivation. Yeast 2-hybrid, immunoprecipitation, and immunoblot analyses indicated that PRDX4 and PRDX1 are capable of homodimerization and heterodimerization with each other but not with the mitochondrial PRDX3. Gel mobility shift and immunoblot analysis found that PRDX4 depletes NFKB binding activity together with a reduction in the amounts of p50, p65, and phosphorylated IKBA, as well as a reduction in the expression of HIV-1 viral proteins. Expression of PRDX4, alone or with PRDX1, increased the resistance of yeast cells to oxidant-induced toxicity. Jin et al. suggested PRDX4 modulates IKBA phosphorylation in the cytoplasm and thus affects a peroxiredoxin-dependent redox step.

Peroxiredoxin-4;1.11.1.15; Antioxidant enzyme AOE372; AOE37-2; Peroxiredoxin IV; Prx-IV; Thioredoxin peroxidase AO372; Thioredoxin-dependent peroxide reductase A0372; PRDX4

A synthetic peptide corresponding to a sequence at the C-terminus of human Peroxiredoxin 4, different from the related mouse and rat sequences by one amino acid.

Probably involved in redox regulation of the cell. Regulates the activation of NF-kappa-B in the cytosol by a modulation of I-kappa-B-alpha phosphorylation. .

1. Jin, D.-Y, Chae, H. Z, Rhee, S. G, Jeang, K.-T. Regulatory role for a novel human thioredoxin peroxidase in NF-kappa-B activation. J. Biol. Chem. 272: 30952-30961, 1997.