Glutathione peroxidase 2 is an enzyme that in humans is encoded by the GPX2 gene. This gene is a member of the glutathione peroxidase family encoding a selenium-dependent glutathione peroxidase that is one of two isoenzymes responsible for the majority of the glutathione-dependent hydrogen peroxide-reducing activity in the epithelium of the gastrointestinal tract. Studies in knockout mice indicate that mRNA expression levels respond to luminal microflora, suggesting a role of the ileal glutathione peroxidases in preventing inflammation in the GI tract. The antioxidant enzyme glutathione peroxidase 2 (Gpx2) is one out of eight known glutathione peroxidases (Gpx1-8) in humans. Mammalian Gpx1, GPx2 (this protein), Gpx3, and Gpx4 have been shown to be selenium-containing enzymes, whereas Gpx6 is a selenoprotein in humans with cysteine-containing homologues in rodents. In selenoproteins, the 21st amino acid selenocysteine is inserted in the nascent polypeptide chain during the process of translational recoding of the UGA stop codon.
Background References
1. Yang M et al. GPX2 predicts recurrence-free survival and triggers the Wnt/β-catenin/EMT pathway in prostate cancer. PeerJ. 2022 Oct
2. Pu L et al. GPX2 Gene Affects Feed Efficiency of Pigs by Inhibiting Fat Deposition and Promoting Muscle Development. Animals (Basel). 2022 Dec
Western blot analysis of Glutathione Peroxidase 2 on different lysates with Rabbit anti-Glutathione Peroxidase 2 antibody (HA721485) at 1/2,000 dilution.
Lane 1: HT-29 cell lysate Lane 2: HepG2 cell lysate Lane 3: HeLa cell lysate (negative)
Lysates/proteins at 20 µg/Lane.
Predicted band size: 22 kDa Observed band size: 22 kDa
Exposure time: 2 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721485) at 1/2,000 dilution was used in primary antibody dilution (K1803) at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Western blot analysis of Glutathione Peroxidase 2 on different lysates with Rabbit anti-Glutathione Peroxidase 2 antibody (HA721485) at 1/1,000 dilution.
Lane 1: SW620 cell lysate Lane 2: LoVo cell lysate Lane 3: HT-29 cell lysate Lane 4: AGS cell lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 22 kDa Observed band size: 22 kDa
Exposure time: 1 minute 17 seconds;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721485) at 1/1,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1:100,000 dilution was used for 1 hour at room temperature.
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