Figure 2
From: Differential effects of SUMO1 and SUMO3 on PKR activation and stability

SUMO3 alters PKR localization. Immunofluorescence analysis was performed in HeLa-wt, HeLa-SUMO1 and HeLa-SUMO3 cells for PKR (K17) staining (left panel). Images obtained in wt cells, SUMO1- and SUMO3-expressing cells were quantified using Image-J software (National Institutes of Health). The resulting relative values corresponding to PKR nuclear localization are shown in histograms (n = 15) (right panel). Student t test was performed to determine the p value (***p < 0.001), ns: not significant.