Figure 5.
Time course for induction of chymotrypsin-like enzyme activity in wild-type myotubes (×) and in those transfected with constitutively active (pCO2 □) and mutant (pKS1 ▪) PKCα. Myotubes were treated with the indicated concentrations of PIF, and enzyme activity was determined at 3 h (A), 6 h (B), 24 h (C) and 48 h (D). The experiment was repeated three times (n=9). Differences from control or pKS1 are indicated as aP<0.05, bP<0.01 and cP<0.005, while differences from wild-type myotubes are indicated as dP<0.005.