Incubation of latent p53 with USP7 in EMSAs stimulated sequence-particular DNA binding by latent p53, suggesting that USP7-binding can reverse this autoinhibition. DNA binding by a C-terminal deletion mutant of p53, p5382?60, which lacks the USP7 binding sequences, was not stimulated by USP7, suggesting that binding to USP7 is needed for this influence
The results over present that USP7 promotes binding of p53 to its target DNA....