Tyrosine is a precursor to the neurotransmitter dopamine. It is converted to L-DOPA by the enzyme tyrosine hydroxylase.
It is also a precursor to the thyroid hormones triiodothyronine (T3) and thyroxine (T4)
Tyrosine and its precursor phenylalanine are required for the synthesis of coenzyme Q10
From MEpedia, a crowd-sourced encyclopedia of ME and CFS science and history