Prostate-associated Gene 4 (PAGE4) is an intrinsically disordered protein (IDP) with an anti-apoptotic function in prostate cancer (PCa) cells. The encoded protein acts as a stress-response protein by controlling the production of reactive oxygen species and preventing DNA damage. PAGE 4, on phosphorylation by HIPK1 (Homeodomain Interacting Protein Kinase 1), enhances c-jun trans-activation and thus plays a major role in stress response pathway in diseased cells.
