Detection of Human/Mouse/Rat Peroxiredoxin 4 by Western Blot. Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line, HEK293 human embryonic kidney cell line, K562 human chronic myelogenous leukemia cell line, NIH‑3T3 mouse embryonic fibroblast cell line, and NRK rat normal kidney cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human/Mouse/Rat Peroxiredoxin 4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5460) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). A specific band was detected for Peroxiredoxin 4 at approximately 32 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 2.
Peroxiredoxin 4 in Human Liver Cancer Tissue. Peroxiredoxin 4 was detected in immersion fixed paraffin-embedded sections of human liver cancer tissue using Goat Anti-Human/Mouse/Rat Peroxiredoxin 4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5460) at 0.3 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Goat IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC004). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cancer cells. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Peroxiredoxin 4
Peroxiredoxin 4 (Prx-IV; also known as PRDX4 and thioredoxin peroxidase AOE372) is a 30-32 kDa, widely expressed cytoplasmic antioxidant enzyme that belongs to the typical 2-Cys class of the TSA/ahpC family of peroxiredoxins. It exists as either a homodimer, or heterodimer with PRDX1. PRDX4 reportedly counteracts p53‑mediated generation of ROS, and regulates NF kappa B via I kappa B-alpha. Human PRDX4 is 271 amino acids (aa) in length and contains an N-terminal poly-Leu region (aa 20‑30) and a 159 thioredoxin domain (aa 79‑237). There is one catalytic cysteine at Cys124. Over amino acids 1‑271, human PRDX4 shares 89% aa identity with mouse and rat PRDX4.
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