Figure 5.

Known TFIIIB regulators respond to hypertrophic stimulation. (A) Whole-cell lysates were prepared from cultured cardiomyocytes treated as in Figure 3B, and analysed by Western blotting using antibodies against the proteins, or phosphoproteins (‘phos-'), specified. The phos-RB antibodies used specifically detect RB phosphorylated on the indicated sites. (B) Cardiomyocytes were cultured as described in Figure 4, and protein lysates analysed by Western blotting to detect the indicated proteins.