C and D. Immunoprecipitations of YAP protein and western blot analysis for p53 binding are performed from lysates of cancer cell lines expressing different mutant p53 proteins (described in Materials and Methods) (C) and from HCT116 cells expressing wild type p53 protein (D). YAP protein was immunoprecipitated with a rabbit polyclonal antibody and the same amount of rabbit IgG was used as negative control of IP. 