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DIO3 belongs to the iodothyronine deiodinase family. It catalyzes the inactivation of thyroid hormone by inner ring deiodination of the prohormone thyroxine (T4) and the bioactive hormone 3,3',5-triiodothyronine (T3) to inactive metabolites, 3,3',5'-triiodothyronine (RT3) and 3,3'-diiodothyronine (T2), respectively. This enzyme is highly expressed in the pregnant uterus, placenta, fetal and neonatal tissues, suggesting that it plays an essential role in the regulation of thyroid hormone inactivation during embryological development. This protein contains a selenocysteine (Sec) residue, which is essential for efficient enzyme activity. 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.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: 5DIII; deiodinase, iodothyronine, type 3; DIOIII; iodothyronine deiodinase, placental type; Thyroxine 5-deiodinase; thyroxine deiodinase; thyroxine deiodinase type III (selenoprotein); Type 3 DI; type 3 iodothyronine selenodeiodinase; Type III iodothyronine deiodinase; type-III 5' deiodinase; type-III 5'-deiodinase
基因别名: 5DIII; D3; DIO3; DIOIII; ITDI3; TXDI3
UniProt ID: (Human) P55073, (Rat) P49897
Entrez Gene ID: (Human) 1735, (Rat) 29475