Tyrosine utilized in synthesis of all except -: (A) Melanin, (B) Melatonin, (C) Dopamine, (D) Thyroxine
Answer is B. Ans. is 'b' i.e., Melatonin o Dopamine b-hydroxylase is a 'copper ' containing monooxygenase that requires ascorbic acid and molecular oxygen.o It catalyzes the formation of norepinephrine.