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- Table of Contents
Designing a Western blot for Thyroxine 5-deiodinase? The guide has the expected band size, antibodies backed by real blot images, the controls to run alongside, and protocols taken from published papers.
Open the DIO3 Western Blot GuideFacts about Thyroxine 5-deiodinase.
Responsible for the deiodination of T4 (3,5,3',5'- tetraiodothyronine) into RT3 (3,3',5'-triiodothyronine) and of T3 (3,5,3'-triiodothyronine) to T2 (3,3'-diiodothyronine).
RT3 and T2 are inactive metabolites.May play a role in preventing premature exposure of developing fetal cells to mature levels of thyroid hormones. Can modulate circulating fetal thyroid hormone concentrations throughout gestation.
| Human | |
|---|---|
| Gene Name: | DIO3 |
| Uniprot: | P55073 |
| Entrez: | 1735 |

| Belongs to: |
|---|
| iodothyronine deiodinase family |

5DIII; D3; deiodinase, iodothyronine, type III; DIOIII; EC 1.97.1; EC 1.97.1.11; ITDI3; placental type; thyroxine deiodinase type III (selenoprotein); Type 3 DI; type 3 iodothyronine selenodeiodinase; type III iodothyronine deiodinase; type-III 5' deiodinase; Type-III 5'-deiodinase
Mass (kDA):
33.947 kDA

| Human | |
|---|---|
| Location: | 14q32.31 |
| Sequence: | 14; NC_000014.9 (101561351..101563452) |
Expressed in placenta and several fetal tissues.
Cell membrane; Single-pass type II membrane protein. Endosome membrane; Single-pass type II membrane protein.





PMID: 7593630 by Salvatore D., et al. Type 3 iodothyronine deiodinase: cloning, in vitro expression, and functional analysis of the placental selenoenzyme.
PMID: 12746313 by Kuiper G.G., et al. Substitution of cysteine for selenocysteine in the catalytic center of type III iodothyronine deiodinase reduces catalytic efficiency and alters substrate preference.