Question

Which amino acid gets iodinised to form T₃ and T₄ hormones?

Answer 1

T₃ (triiodothyronine) and Thyroxine (T₄):

1. Thyroxine, usually known as T4 because it contains four iodine atoms, is the most important thyroid hormone released by the thyroid gland.
2. T4 is transformed to triiodothyronine (T3) by the removal of an iodine atom in order to exercise its effects.
3. This happens mostly in the liver and in areas where T3 activates, such as the brain.
4. T₃ (triiodothyronine) and T₄ (thyroxine) are both hormones produced by the thyroid gland.
5. These hormones interact to regulate your body's temperature, metabolism, and heart rate.
6. The majority of T3 in the body is bound to protein.
7. Thyroxine (T₄) and tri-iodothyronine (T₃) are iodinated derivatives of the amino acid tyrosine, which governs growth, development, and important metabolic activities.