Sunday, February 11, 2007
WHAT AM I?
I am a hormone, C15H11I4NO4, secreted by the thyroid gland.
I am formed by combining the amino acid tyrosine with iodine. The thyroid gland avidly accumulates small amounts of iodine in the diet. This iodine is oxidized to iodide ion in the gland and then reacts with tryosine to form mono- and diiodotyrosine. These latter are then coupled to form either triiodothyronine or yours truly.
Complexed to a protein, I am stored in the follicle stems between thyroid cells. I enter into the bloodstream complexed to another protein, plasma globulin.
grow with me 6:56 PMI am a hormone, C15H11I4NO4, secreted by the thyroid gland.
I am formed by combining the amino acid tyrosine with iodine. The thyroid gland avidly accumulates small amounts of iodine in the diet. This iodine is oxidized to iodide ion in the gland and then reacts with tryosine to form mono- and diiodotyrosine. These latter are then coupled to form either triiodothyronine or yours truly.
Complexed to a protein, I am stored in the follicle stems between thyroid cells. I enter into the bloodstream complexed to another protein, plasma globulin.
