Target intelligence / Profile preview

Tyrosinase (TYR)

Target
TYR
Molecular classification
Enzyme, Oxidoreductase, Copper-containing oxidase
01

Overview

Tyrosinase is a copper-containing oxidase enzyme that plays a central role in the biosynthesis of melanin and other pigments from tyrosine. It catalyzes the hydroxylation of monophenols and the oxidation of o-diphenols to o-quinones, which spontaneously polymerize to form melanins. In humans, tyrosinase is essential for melanin production in melanocytes, contributing to pigmentation of skin, hair, and eyes. Mutations in the TYR gene can cause oculocutaneous albinism. Tyrosinase also has biotechnological applications in bioremediation, dye production, and food processing.

Other names
Monophenol monooxygenaseCresolaseDiphenol oxidaseCatecholase
02

Mechanism of action

Tyrosinase catalyzes the hydroxylation of monophenols and the oxidation of o-diphenols, leading to the production of quinones that polymerize into melanin.

03

Biological functions

Melanin biosynthesisOxidation of phenolic compoundsWound healingRadiation protectionPrimary immune responseDefense mechanisms against pathogens (in plants/other organisms)
04

Disease associations

Oculocutaneous albinismMelanoma susceptibility
05

Safety considerations

Undesirable browning reactions in food processingPotential for off-target effects in bioremediation applications

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