Type 3 DI Type III iodothyronine deiodinase IOD3_RANCA Type-III 5'-deiodinase DIOIII 269 dio3 Responsible for the deiodination of T4 (3,5,3',5'- tetraiodothyronine) into RT3 (3,3',5'-triiodothyronine) and of T3 into T2 (3,3'-diiodothyronine). May play a major role in regulating intracellular T3 levels in developing tadpoles. txdi3 MLPAPHTCCRLLQQLLACCLLLPRFLLTVLLLWLLDFPCVRRRVIRGAKEEDPGAPEREDPPLCVSDTNRMCTLESLKAVWYGQKLDFFKSAHLGGGAPNTEVVTLEGQRLCRILDFSKGHRPLVLNFGSCTUPPFMARLQAYQRLAAQRLDFADFLLVYIEEAHPCDGWLSTDAAYQIPTHQCLQDRLRAAQLMLQGAPGCRVVADTMTNASNAAYGAYFERLYVILDGKVVYQGGRGPEGYKIGELRNWLDQYQTRATGNGALVIQV 5DIII itdi3