ty·ros·i·nase (t -r s  -n s , -nz)n. 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 [ˌtaɪrəʊsɪˈneɪz ˌtɪrəʊ-]
n
(Life Sciences & Allied Applications / Biochemistry) an enzyme occurring in many organisms that is a catalyst in the conversion of tyrosine to the pigment melanin; inactivity of this enzyme results in albinism
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