Gene Symbol | DIO2 |
Entrez Gene ID | 373903 |
Full Name | iodothyronine deiodinase 2 |
General protein information |
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Gene Type | protein-coding |
Organism | Gallus gallus(chicken) |
Summary | The protein encoded by this gene belongs to the iodothyronine deiodinase family. It catalyzes the conversion of prohormone thyroxine (3,5,3',5'-tetraiodothyronine, T4) to the bioactive thyroid hormone (3,5,3'-triiodothyronine, T3) by outer ring 5'-deiodination. This gene is expressed in brain, thyroid and lung. It is thought to be responsible for the 'local' production of T3, and thus important in influencing thyroid hormone action in these tissues. Unlike in mammals, this gene is also expressed in the liver of chicken, suggesting a role for this enzyme in the generation of plasma T3 in this species. This protein is a selenoprotein containing the rare selenocysteine (Sec) amino acid at its active site, and may contain additional Sec residues. 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 described for this gene. [provided by RefSeq, May 2016]. |