This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry
Copper containing enzyme is: 
Select and explain. 
A. Dopamine hydroxylase, B. Dopamine decarboxylase, C. Dopamine carboxylase, D. Tyrosine hydroxylase
A: Dopamine hydroxylase
Answer: A: Dopamine hydroxylase 
Explanation: Ans. (a) Dopamine hydroxylaseRef: Harper's Biochemistry, 30lh edn. pg. 561* Those enzymes that require inorganic metal ions as their cofactor are termed as metalloenzymes aka cofactors.* Dopamine hydroxylase is a copper-containing enzyme involved in the synthesis of the catecholamines: Norepinephrine and Epinephrine from tyrosine in the adrenal medulla and central nervous system.* Ascorbic acid is also linked with copper containing hydroxylases such as peptidoglycine hydroxylase and dopamine hydroxylase. Dopamine decarboxylase requires pyridoxal phosphate for the conversion of L-dopa to 3,4-dihydroxyphenylethylamine.Metals and their MetalloenzymesMetalMetalloenzymesCopperCytochrome oxidase, Lysyl oxidase, Dopamine Hydroxylase, ascorbic acid oxidase, Tyrosinase, Ferroxidase (Ceruloplasmin), Superoxide DismutaseMagnesiumHexokinase, PFK, Glucose-6-phosphatase, Kinases, Thermostable DNA polymerases, Enolase, Creatinine kinaseSeleniumGlutathione peroxidaseMolybdenumXanthine oxidaseCalciumLipase, LecithinaseIronCytochrome oxidase, Xanthine oxidase, Catalase, PeroxidaseNickelUrease