Amine hormones, such as epinephrine and thyroid hormones, are derived from amino acids. They are synthesized in specific cells in the adrenal medulla and thyroid gland, respectively. The synthesis involves: 1. Amino Acid Precursor: Amine hormones are synthesized from amino acids like tyrosine. 2. Enzymatic Conversion: Enzymes modify the amino acid to produce the active hormone.