Western blot analysis of p53 phosphorylation in untreated (A,D), ERK2 treated (B,E) and ERK2 and lambda protein phosphatase (sc-200312A) treated (C,F) human recombinant p53. Antibodies tested include p-p53 (B-3): sc-377553. (A,B,C) and p53 (Pab 240): sc-99 (D,E,F).