Two different activities of alkaline phosphatase in cultured mammalian cells

Autor: Hajim Katsuta, Toshiko Takaoka, Kiyoshi Nose
Rok vydání: 1973
Předmět:
Zdroj: Archives of Biochemistry and Biophysics. 155:1-8
ISSN: 0003-9861
Popis: Alkaline phosphatase activities in various mammalian cell strains in culture, some of which had been grown in protein-free synthetic media, were investigated and characterized. Two distinctly different activities of alkaline phosphatase were found in crude extracts of various cell strains. The first activity (designated alkaline phosphatase I) was the highest around the range of pH 10.0 and inhibited by cyanide or β -mercapto-ethanol. This activity was mainly detected in particulate fractions of cells. The second was shown to be optimal at pH 8.6 and inhibited by p -chloromercuribenzoate (designated alkaline phosphatase II). Among various cell strains examined, the former activity was detected only in some of them, whereas the latter type was present in each strain. These two activities were separated from each other by DEAE-cellulose chromatography.
Databáze: OpenAIRE