Figure 3.
Nuclear import of GST-NLS substrates in digitonin-permeabilized HeLa cells. GST-NLS fusion proteins were incubated in digitonin permeabilized HeLa cells for 30 min at 37°C prior to fixation with paraformaldehyde and staining with fluorescent antibody against GST. Left column panels are import without added cytosol and right column panels with added HeLa cytosol extracts.