Iodinated tyrosine derivatives (T4: thyroxine, 4 iodines; T3: triiodothyronine, 3; T3 is active). Bind nuclear TR → basal metabolic rate, growth, development. Deficiency → hypothyroidism, cretinism.
Iodinated tyrosine derivatives (T4: thyroxine, 4 iodines; T3: triiodothyronine, 3; T3 is active). Bind nuclear TR → basal metabolic rate, growth, development. Deficiency → hypothyroidism, cretinism.