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Aliases | GPX3 , GPx-P, GSHPx-3, GSHPx-P, glutathione peroxidase 3 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 138321; MGI: 105102; HomoloGene: 20480; GeneCards: GPX3; OMA:GPX3 - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Glutathione peroxidase 3 (GPx-3), also known as plasma glutathione peroxidase (GPx-P) or extracellular glutathione peroxidase is an enzyme that in humans is encoded by the GPX3 gene. [5] [6] [7]
GPx-3 belongs to the glutathione peroxidase family, which functions in the detoxification of hydrogen peroxide. It contains a selenocysteine (Sec) residue at its active site. The selenocysteine is encoded by the UGA codon, which normally signals translation termination. The 3' UTR of Sec-containing genes have a common stem-loop structure, the sec insertion sequence (SECIS), which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. [5]
GPx-3 has a wide thiol specificity. The sources of reducing power for GPx-3 in vitro include GSH, cysteine, mercaptoethanol, and dithiothreitol. [8] There is an evidence of effectiveness of homocysteine in reduction of GPx-3: GSH can be completely replaced by reduced homocysteine in vitro. [9] [10]
In the rat blood plasma, the GPx-3 activity is low during the first two weeks after birth and rapidly increasing during transition from milk nutrition to solid food. Aging is accompanied by decrease in GPx-3 activity: in the blood plasma of rats it occurs around 23-26 months of age. [10]
Glutathione peroxidase (GPx) is the general name of an enzyme family with peroxidase activity whose main biological role is to protect the organism from oxidative damage. The biochemical function of glutathione peroxidase is to reduce lipid hydroperoxides to their corresponding alcohols and to reduce free hydrogen peroxide to water.
Complement component 6 is a protein that in humans is encoded by the C6 gene.
Mannan-binding lectin serine protease 1 also known as mannose-associated serine protease 1 (MASP-1) is an enzyme that in humans is encoded by the MASP1 gene.
Forkhead box protein C2 (FOXC2) also known as forkhead-related protein FKHL14 (FKHL14), transcription factor FKH-14, or mesenchyme fork head protein 1 (MFH1) is a protein that in humans is encoded by the FOXC2 gene. FOXC2 is a member of the fork head box (FOX) family of transcription factors.
ATP-binding cassette sub-family C member 4 (ABCC4), also known as the multidrug resistance-associated protein 4 (MRP4) or multi-specific organic anion transporter B (MOAT-B), is a protein that in humans is encoded by the ABCC4 gene.
ATP-binding cassette, sub-family B member 11 (ABCB11), also known as the bile salt export pump (BSEP), is a protein which in humans is encoded by the ABCB11 gene.
Glutathione peroxidase 1, also known as GPx1, is an enzyme that in humans is encoded by the GPX1 gene on chromosome 3. This gene encodes a member of the glutathione peroxidase family. Glutathione peroxidase functions in the detoxification of hydrogen peroxide, and is one of the most important antioxidant enzymes in humans.
Glutathione S-transferase A1 is an enzyme that in humans is encoded by the GSTA1 gene.
Peroxiredoxin-2 is a protein that in humans is encoded by the PRDX2 gene.
Glutathione S-transferase M3 (brain), also known as GSTM2, is an enzyme which in humans is encoded by the GSTM99 gene.
Glutathione peroxidase 2 is an enzyme that in humans is encoded by the GPX2 gene.
Glutathione S-transferase theta-2 is an enzyme that in humans is encoded by the GSTT2 gene.
Glutathione S-transferase Mu 4 is an enzyme that in humans is encoded by the GSTM4 gene.
Glutathione peroxidase 7 is an enzyme that in humans is encoded by the GPX7 gene.
Glutathione S-transferase A3 is an enzyme that in humans is encoded by the GSTA3 gene.
UDP-glucuronosyltransferase 2B17 is an enzyme that in humans is encoded by the UGT2B17 gene.
Zinc transporter 1 is a protein which in humans is encoded by the SLC30A1 gene.
Glutathione peroxidase 5 (GPx-5), also known as epididymal secretory glutathione peroxidase is an enzyme that in humans is encoded by the GPX5 gene.
Glutathione peroxidase 6 (GPx-6) is an enzyme that in humans is encoded by the GPX6 gene.
Leiomodin 1 is a protein that in humans is encoded by the LMOD1 gene.