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Identification of a tyrosinasse from a periphytic marine bacterium

Authors
Journal
FEMS Microbiology Letters
0378-1097
Publisher
Oxford University Press
Publication Date
Volume
67
Issue
3
Identifiers
DOI: 10.1016/0378-1097(90)90008-e
Keywords
  • Tyrosinase
  • Melanin
  • Bacterial Pigments
Disciplines
  • Biology

Abstract

Abstract A newly isolated periphytic marine bacterium has been shown to synthesize a true tyrosinase. The enzyme exhibited both cresolase and catecholase functions and catalyzed the biosynthesis of melanin from l-tyrosine. Enzyme activity was enhanced in the presence of oxidants and was inhibited by copper chelating agents such as diethyldithiocarbamic acid and cyanide. The apparent molecular weigth of the 2–40 tyrosinase (67 000) makes this enzyme the largest known procaryote tyrosinase.

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