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Glossary of Physiology Terms
Deiodinase
Definition:
The enzyme found in target tissues of the thyroid hormones that converts thyroxine (also known as tetraiodothyronine or T
4) to triiodothyronine (T
3).
Specifically, 5'-deiodinase converts T
4 to the active form of the thyroid hormone, T
3.
5-Deiodinase converts T
4 to the inactive form of the thyroid hormone, reverse T
3 (rT
3).
Posted: Sunday, January 18, 2015