Western blot analysis of phosphorylated 4E-BP1 expression in untreated (A,D), insulin-treated (B,E) and serum starved + serum (C,F) NIH/3T3 whole cell lysates. Blots were probed with p-4E-BP1 (Ser 65/Thr 70):
sc-12884 (A,B,C) and p-4E-BP1 (Ser 65/Thr 70):
sc-12884 preincu-bated with its cognate phosphorylated peptide (D,E,F).