Amino acid required for formation of thyroxine?
Ans. is 'b i.e., Tyrosine The term thyroid hormone denotes both thyroxine (7'4) and triodothyronine (T3). Both T4 and T3 are iodine derivatives of thyronine. Thyronine is a condensation product of two molecules of amino acid tyrosine. Thyroxine is 3, 5, 3', 5' - tetraiodothyronine and T3 is 3, 5, 3 '-triiodothyronine. Thyroid hormones are synthesized and stored in the thyroid follicles as apa of thyroglobulin molecule.
Tryptophan
Tyrosine
Glutamine
Cysteine