Fig. 5.
Decreased half-life of p130 in the cytoplasm in the presence of HPV 6 E7 and HPV 16 E7. (A) HFKs were infected as in Fig. 1. and treated with 0.25mM cycloheximide for the indicated times. Immunoblots of cytoplasmic extracts (top) and densitometry (bottom) from a representative experiment are shown. Cytoplasmic fractions were corrected for tubulin and are relative to LX. (B) Inhibition of p130 degradation by MG132. HFKs were infected as in A and treated with 0.25mM cycloheximide plus 50uM MG132 for the indicated times. Immunoblots of cytoplasmic extracts (top) and densitometry (bottom) from a representative experiment are shown.