DIO3

DIO3, also known as Type 3 Deiodinase, is a crucial enzyme involved in the regulation of thyroid hormone activity. Positioned primarily within various tissues, including the liver, brain, and placenta, DIO3 plays a pivotal role in controlling thyroid hormone levels and mediating tissue-specific responses to thyroid hormones. One of the key functions of DIO3 is its ability to catalyze the inactivation of thyroid hormones, particularly thyroxine (T4), by converting it into an inactive metabolite known as reverse triiodothyronine (rT3). This enzymatic activity helps fine-tune thyroid hormone signaling by reducing the availability of active thyroid hormones in target tissues, thereby modulating metabolic...