Figure 7From: p38β MAPK upregulates atrogin1/MAFbx by specific phosphorylation of C/EBPβExpression of constitutively active p38β in mouse muscle induces atrogin1/MAFbx upregulation and muscle mass loss in a C/EBPβ-dependent manner. The TA lysate derived from Figure 6 was further analyzed for level of atrogin1/MAFbx by western blotting. Representative blots and densitometry data are shown (A). The weight of TA transfected with a plasmid encoding an active p38 isoform was compared to that of TA transfected with empty vector (control) from the same mouse (B). *denotes a difference (P <0.05) based on ANOVA. TA, tibialis anterior.Back to article page