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DIO3 Antibody (C-term) Blocking Peptide

Synthetic peptide

Product Information
Primary Accession P55073
Other Accession NP_001353
Peptide ID 36842
Additional Information
Gene ID 1735
Other Names Type III iodothyronine deiodinase, 5DIII, DIOIII, Type 3 DI, Type-III 5'-deiodinase, DIO3, ITDI3, TXDI3
Format Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.
PrecautionsThis product is for research use only. Not for use in diagnostic or therapeutic procedures.
Protein Information
Name DIO3
Synonyms ITDI3, TXDI3
Function Responsible for the deiodination of T4 (3,5,3',5'- tetraiodothyronine) into RT3 (3,3',5'-triiodothyronine) and of T3 (3,5,3'-triiodothyronine) into T2 (3,3'-diiodothyronine). RT3 and T2 are inactive metabolites. May play a role in preventing premature exposure of developing fetal tissues to adult levels of thyroid hormones. Can regulate circulating fetal thyroid hormone concentrations throughout gestation. Essential role for regulation of thyroid hormone inactivation during embryological development.
Cellular Location Cell membrane; Single-pass type II membrane protein. Endosome membrane; Single-pass type II membrane protein
Tissue Location Expressed in placenta and several fetal tissues
Research Areas
Citations (0)

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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.


Bessho, K., et al. Eur. J. Pediatr. 169(2):215-221(2010) Wallace, C., et al. Nat. Genet. 42(1):68-71(2010) Aerts, G., et al. Endocrinology 150(11):5171-5180(2009) Panicker, V., et al. J. Clin. Endocrinol. Metab. 94(5):1623-1629(2009) Panicker, V., et al. J. Clin. Endocrinol. Metab. 93(8):3075-3081(2008)

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$ 80.00
Cat# BP9529b
(40 western blots)
Availability: In Stock
Bulk Size
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