Open AccessIdentification of a tyrosinasse from a periphytic marine bacterium
Author(s) -
Kelley Sarah K.,
Coyne Ver E.,
Sledjeski Darren D.,
Claiborne Fuqua W.,
Weiner Ronald M.
Publication year - 1990
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1990.tb04032.x
Subject(s) - identification (biology) , biology , bacteria , marine bacteriophage , ecology , genetics
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.