Fig. 2: Kinetics of the c-JUN N-terminal phosphorylation in vivo.

a Representative Western blot analysis of the phosphorylation (activation) of endogenous JNK in NIH3T3 cells following anisomycin treatment (top), and quantification of the detected protein levels using the Image Studio Lite Software (Licor) and normalized to total JNK. Graphs show the mean ± standard error of the mean (SEM) (n = 3 biologically independent experiments) (bottom). b Representative western blot analysis of the phosphorylation kinetics of endogenous c-JUN in NIH3T3 cells following anisomycin treatment using phosphorylation-specific antibodies (top), and quantification of the detected protein levels using the Image Studio Lite Software (Licor) and normalized to total c-JUN and subsequently to the maximum phosphorylation time point of each phosphorylation-specific antibody. Graphs show the mean ± standard error of the mean (SEM) (n = 3 biologically independent experiments) (bottom). Source data are provided as a Source Data file. c Schematic summary of the observed phosphorylation kinetics of the c-JUN N-terminal phosphorylation by JNK.