Enzyme that oxidises tyrosine and other phenolic substances forming brown and black pigments.

(tie-roe-SIN-ase) Enzyme involved in initial stages of melanin production. Tyrosinase peptide is more abundant on melanoma cells compared with on normal cells, and is considered a tumor-associated antigen.

the enzyme essential in synthesis of melanin.

the enzyme essential in development of melanin.

Enzyme that stimulates melanin production. See tyrosine.

A copper-containing enzyme that affects melanin production and is widespread in animals.

An enzyme or specialized protein substance in the pigment cell which promotes the conversion of the amino acid tyrosine to DOPA in the process of making pigment.

An enzyme that converts tyrosine into melanin in the first stage of melanogenesis.

Tyrosinase (monophenol monooxygenase) (; CAS number: 9002-10-2) is an enzyme that catalyses the oxidation of phenols (such as tyrosine) and is widespread in plants and animals. Tyrosinase is a copper-containing enzyme present in plant and animal tissues that catalyzes the production of melanin and other pigments from tyrosine by oxidation, as in the blackening of a peeled or sliced potato exposed to air. When a person has a mutated tyrosinase gene they have albinism, a hereditary disease that one in every 17,000 person has in the United States.