Thyroxine (thyroid hormone) production (Homo sapiens)
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Description
Thyroxine hormone is produced in the thyroid gland from tyrosine and iodine. Thyrotropin-releasing hormone (TRH) is produced by the hypothalamus. It stimulates the production of thyroid-stimulating hormone (TSH) in the anterior pituitary gland, which affects the thyroid-stimulating hormone receptor (TSHR). Iodine is captured by a hydrogen peroxide trap procuced by thyroid peroxidase and added to the 3' and 5' postitions of tyrosine. This can either be free tyrosine or a tyrosine residue in thyroglobuline. After the multiple iodination steps this produces T3 and T4.
The production of the thyroid hormones thyroxine (T4),tri-iodothyronine (T3) and reverse T3 (rT3) is dependent on the organification of iodine into thyroglobulin (Tg), the major protein product of the thyroid (2). This involves thyroid peroxidase catalyzed iodination of tyrosine residues in Tg to form mono- and di-iodotyrosines and their subsequent crosslinking to form the iodothyronines T3 and T4.
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Ontology Terms
Bibliography
- Citterio CE, Targovnik HM, Arvan P; ''The role of thyroglobulin in thyroid hormonogenesis.''; Nat Rev Endocrinol, 2019 PubMed Europe PMC Scholia
- Van Herle, A.J ., G. Vassart, J.E . Dumont; ''Control of thyroglobulin synthesis and secretion''; N. Engl. J. Med. 301:239, 1979 PubMed Europe PMC Scholia
- Ron E, Lubin JH, Shore RE, Mabuchi K, Modan B, Pottern LM, Schneider AB, Tucker MA, Boice JD Jr; ''Thyroid cancer after exposure to external radiation: a pooled analysis of seven studies.''; Radiat Res, 1995 PubMed Europe PMC Scholia
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External references
DataNodes
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Name | Type | Database reference | Comment |
---|---|---|---|
127 Iodide | Metabolite | HMDB12238 (HMDB) | |
131 Iodide | Metabolite | ||
L-Tyrosine | Metabolite | HMDB00158 (HMDB) | |
SLC5A5 | GeneProduct | 6528 (Entrez Gene) | |
TRH | GeneProduct | 7200 (Entrez Gene) | |
TSH | GeneProduct | 1081 (Entrez Gene) | |
TSHR | GeneProduct | 7253 (Entrez Gene) | |
Thyroglobulin (Tg) | GeneProduct | ||
Thyroidperoxidase iodination of tyrosine | GeneProduct | 7173 (Entrez Gene) | |
Thyroxine (T4) | Metabolite | HMDB00248 (HMDB) | |
Triiodothyronine (T3) | Metabolite | 5707 (Chemspider) |
Annotated Interactions
No annotated interactions