Figure 4. Nuclear Localization is Required for α1-AR Signaling in Adult Cardiac Myocytes.
Representative Western blot for phosphorylated ERK (P-ERK) and total ERK (T-ERK) from α1ABKO cardiac myocytes expressing (A) α1A-wild-type or α1A-NLSmut or (B) α1B-wild-type or α1B-NLSmut treated with 20 µM phenylephrine (PE) for 20 minutes (n=3). (C) Representative Western blot for P-ERK and T-ERK in wild-type cardiac myocytes treated with 20 µM PE for 20 minutes in the absence or presence of the nuclear export inhibitor leptomycin B (lepB) (n=6).