Thyroid hormone receptor

Function

Thyroid hormone receptors (TR) are expressed as 2 proteins: TRα and TRβ. TR is a ligand-dependent transcription factor that mediates the biological activity of the thyroid hormone (triiodo-thyronine). TR contains DNA-binding domain at the center and ligand-binding domain at the C-terminal.

• Thyroid hormone receptor alpha1.is involved in brain functions. Its deletion is leading to severe anxiety and morphological changes in the hippocampus^[1].

See also Intracellular receptors

Disease

TRβ-deficient mice exhibit a deficit in auditory function^[2]. Mutations in TRβ cause thyroid hormone resistance syndrome. Mutations in the TRα ar involved in dwarfism^[3]. Loss of normal functions of TR by deletion or mutations could contribute to cancer development^[4].

Relevance

Triiodothyroacetic acid (Triac) is used to suppress thyroid hormone resistance^[5].

Structural highlights

The ^[6].

3D Structures of thyroid hormone receptor

Thyroid hormone receptor 3D structures

References

1. ↑ Bernal J. Thyroid hormone receptors in brain development and function. Nat Clin Pract Endocrinol Metab. 2007 Mar;3(3):249-59. PMID:17315033 doi:10.1038/ncpendmet0424
2. ↑ Forrest D, Erway LC, Ng L, Altschuler R, Curran T. Thyroid hormone receptor beta is essential for development of auditory function. Nat Genet. 1996 Jul;13(3):354-7. doi: 10.1038/ng0796-354. PMID:8673137 doi:http://dx.doi.org/10.1038/ng0796-354
3. ↑ Cheng SY. Thyroid hormone receptor mutations and disease: beyond thyroid hormone resistance. Trends Endocrinol Metab. 2005 May-Jun;16(4):176-82. doi:, 10.1016/j.tem.2005.03.008. PMID:15860414 doi:http://dx.doi.org/10.1016/j.tem.2005.03.008
4. ↑ Kim WG, Cheng SY. Thyroid hormone receptors and cancer. Biochim Biophys Acta. 2013 Jul;1830(7):3928-36. doi:, 10.1016/j.bbagen.2012.04.002. Epub 2012 Apr 6. PMID:22507269 doi:http://dx.doi.org/10.1016/j.bbagen.2012.04.002
5. ↑ Kunitake JM, Hartman N, Henson LC, Lieberman J, Williams DE, Wong M, Hershman JM. 3,5,3'-triiodothyroacetic acid therapy for thyroid hormone resistance. J Clin Endocrinol Metab. 1989 Aug;69(2):461-6. doi: 10.1210/jcem-69-2-461. PMID:2753985 doi:http://dx.doi.org/10.1210/jcem-69-2-461
6. ↑ Sandler B, Webb P, Apriletti JW, Huber BR, Togashi M, Cunha Lima ST, Juric S, Nilsson S, Wagner R, Fletterick RJ, Baxter JD. Thyroxine-thyroid hormone receptor interactions. J Biol Chem. 2004 Dec 31;279(53):55801-8. Epub 2004 Oct 4. PMID:15466465 doi:10.1074/jbc.M410124200