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gpx4a

Official Full Name
glutathione peroxidase 4a
Organism
Danio rerio
GeneID
352928
Background
The protein encoded by this gene belongs to the glutathione peroxidase family, members of which catalyze the reduction of hydrogen peroxide, organic hydroperoxides and lipid hydroperoxides, and thereby protect cells against oxidative damage. Several isozymes of this gene family exist in vertebrates, which vary in cellular location and substrate specificity. This isozyme has a high preference for lipid hydroperoxides and protects cells against membrane lipid peroxidation and cell death. It is also required for normal sperm development. This isozyme is a selenoprotein, containing the rare amino acid selenocysteine (Sec) at its active site. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. Alternatively spliced transcript variants have been found for this gene. A paralog of this gene is present on chromosome 2. Each paralog has a distinct pattern of expression during embryonic development. [provided by RefSeq, Aug 2017]
Synonyms
cb563; cb691; PHGPxa; sb:cb563; zgc:92253; wu:fb82e03;

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