What is the function of tyrosinase in melanin production?

What is the function of tyrosinase in melanin production?

• A. It transports melanin in cells.
• B. It is an enzyme that helps produce melanin.
• C. It degrades melanin.
• D. It acts as a structural protein in skin.

Answer: (B)

The main idea is that tyrosinase is the catalyst that drives melanin biosynthesis. Tyrosinase is an enzyme in melanocytes that starts the chemical reactions turning the amino acid tyrosine into melanin, first converting tyrosine to DOPA and then DOPA to dopaquinone, with these intermediates ultimately forming melanin pigment. Because it directly speeds up the production of melanin, it’s essential for pigmentation. It’s not a transporter, not a degrading enzyme, and not a structural protein, so those options don’t fit. Defects in tyrosinase reduce melanin production, which is why this enzyme is central to how skin and hair color are made.

The main idea is that tyrosinase is the catalyst that drives melanin biosynthesis. Tyrosinase is an enzyme in melanocytes that starts the chemical reactions turning the amino acid tyrosine into melanin, first converting tyrosine to DOPA and then DOPA to dopaquinone, with these intermediates ultimately forming melanin pigment. Because it directly speeds up the production of melanin, it’s essential for pigmentation. It’s not a transporter, not a degrading enzyme, and not a structural protein, so those options don’t fit. Defects in tyrosinase reduce melanin production, which is why this enzyme is central to how skin and hair color are made.