TABLE 1

Summary of Km and Vmax values determined from substrate velocity analysis as described under Materials and Methods

Values are the mean ± S.D. of three experiments performed in duplicate.




Km

Vmax
μM nmol phosphate/min
PP2A 242 ± 109 1.7 ± 0.3
PP2A + GST 337 ± 246 3.3 ± 1.2
PP2A + Gα12
123 ± 25
11.0 ± 0.6