Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to tyrosinase: tyrosine
mon·o·phe·nol mon·o·ox·y·gen·ase(mon-ō-fē'nol mon'ō-oksĭ-jen-ās'),
1. A copper-containing oxidoreductase that catalyzes the oxidation of o-diphenols to o-quinones by O2, with the incorporation of one of the two oxygen atoms in the product; it also catalyzes the oxidation of monophenols, such as l-tyrosine, to dihydroxy-l-phenylalanine (dopa), a precursor of melanin and epinephrine (catecholamines), and can act as a catechol oxidase; a deficiency of this enzyme is observed in several forms of albinism. Synonym(s): cresolase, monophenol oxidase, tyrosinase
2. Synonym(s): laccase
A copper-containing enzyme of 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.
tyrosinase(1) Catechol oxidase, EC 126.96.36.199.
(2) Monophenol monooxygenase, EC 188.8.131.52.
tyrosinaseA copper-containing enzyme that occurs in melanocytes and catalyses the production of MELANIN from TYROSINE. Also known as monophenol mono-oxygenase.
An enzyme in a pigment cell which helps change tyrosine to DOPA during the process of making melanin.
Mentioned in: Albinism