Tyrosinase is a copper-containing monooxygenase.Tyrosinase catalysis reaction including hydroxylation and oxidation steps which are the rate-limiting steps in melanin production.

• 酪氨酸酵素是个含铜的单氧酶，在生成黑色素中进行羟基化与氧化反应此为合成黑色素的速率决定步骤。