Activation of WT AMPK and the AMP/ADP-insensitive RG mutant by GO and H2O2. (A) Activation of AMPK in response to GO (10 mU/ml) measured in anti-FLAG immunoprecipitates in WT and RG cells. Results are mean ± SEM (n = 20–24). (B) As (A), but adding a single dose of H2O2 at the calculated final concentration shown, and then preparing cell lysates 60 min later. Results are mean ± SEM (n = 4). (C) As (B), but varying the time of incubation with a calculated final concentration of 1 mM H2O2. Results are mean ± SEM (n = 4). Statistical significance was assessed by 1-way ANOVA using Sidak’s multiple comparison test: ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001, ∗∗∗∗p < 0.0001.