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  • Title: Immunoelectron microscopic localization of tyrosinase in the mouse melanocyte.
    Author: Yamamoto H, Takeuchi T.
    Journal: J Histochem Cytochem; 1981 Aug; 29(8):953-8. PubMed ID: 6792273.
    Abstract:
    In the melanocyte, tyrosinase is known as the dey enzyme for melanin formation. Purified tyrosinase protein was prepared that was capable of oxidizing tyrosine. The localization of tyrosinase antigen in the melanocyte was studied using antiserum against tyrosinase. DOPA (L-3,4-dihydroxyphenylalanine)-reaction product and tyrosinase antigen were found on the same organelles i.e., premelanosomes, melanosomes, GERL, and Golgi vesicles. This result seems to suggest that it is cytochemically appropriate to use DOPA as the substrate of tyrosinase. It appeared that tyrosinase antigen was present as granule-like structures inside GERL cisterna and associated with its membrane.
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