Abstract
1. 1. Mannosidase, hexosaminidase, galactosidase and fucosidase activities were determined in cell free extracts of wild type and con A-resistant L6 myoblast cells. 2. 2. Two mannosidase activities were detected, with pH optima of 4.6 and 6.0. The con A-resistant cells were almost devoid of intracellular mannosidase activity with optimum pH 4.6. Differences in K m and F max values for mannosidase activities were found when con A-resistant and wild type cells were compared. 3. 3. A decrease in the intracellular hexosaminidase activity in the con A-resistant myoblasts was accompanied by an increase in extracellular activity. N mannosidase activities of wild type and con A-resistant cells.
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