Essential Biochemistry - Protein Metabolism (Section 11 - No. 14)
Which enzyme catalyzes the first step in the biosynthesis of melanin?
Tyrosinase
Phenylalanine hydroxylase
Tryptophan hydroxylase
Histidine decarboxylase
Explanation
Tyrosinase catalyzes the oxidation of tyrosine to DOPA, the first step in melanin synthesis.
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