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Glossary of Physiology Terms -
Deiodinase

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Deiodinase

Definition:
The enzyme found in target tissues of the thyroid hormones that converts thyroxine (also known as tetraiodothyronine or T4) to triiodothyronine (T3).

Specifically, 5'-deiodinase converts T4 to the active form of the thyroid hormone, T3.

5-Deiodinase converts T4 to the inactive form of the thyroid hormone, reverse T3 (rT3).




Posted: Sunday, January 18, 2015
Last updated: Wednesday, March 12, 2025
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