WT primary hepatocytes were infected with an adenovirus harboring FERM-Myc (Ad-FERM-Myc) or LacZ (Ad-LacZ) for 48 hours. (F) Ad-FERM-Myc- or Ad-LacZ-expressing WT hepatocytes were serum-starved for 16 hours and stimulated with glucagon (10 nM) for 10 minutes. Levels of p-PKA substrates, p-CREB, CREB, FERM-Myc and GAPDH were determined by immunoblotting. 