Distribution of XG-FucTase and UDPase in a
membrane and soluble fraction. Golgi vesicles kept overnight in liquid
nitrogen were thawed, centrifuged at 100,000g for 1
h, and the supernatant and pellet separated. XG-FucTase (A) and UDPase
(B) activities were measured in the vesicles, supernatant (Sup.), and
pellet. The total activity in the supernatant and pellet are compared
with the total activity present in the vesicles before centrifugation.
The data are the average activity for triplicate samples from one
experiment out of two independent experiments with similar results.