title: p53-Mdm2--the affair that never ends.
abstract: The p53-Mdm2 paradigm represents the best-studied relationship between a tumor suppressor gene which functions as a transcription factor and an oncogene, which functions primarily as an E3 protein ligase. The intimate relationship between these two partners has expanded to include almost every cellular biological system - from development, to growth control and programmed cell death. The affair between Mdm2 and p53 is closely controlled by a complex array of post-translational modifications, which in turn dictates the stability and activity of p53 and Mdm2. Functional diversity depends on the association with a large subset of partner proteins, which dictates the type of activity and corresponding selectivity. Here we summarize the current understanding of post-translational modifications and their effect on conformation-based functional relationship between Mdm2 and p53, as it pertains to their diverse cellular biological functions.
authors.affiliation: Ruttenberg Cancer Center Mount Sinai School of Medicine, New York, NY 10029, USA.
authors.forename: Dania
authors.initials: D
authors.lastname: Alarcon-Vargas
authors.forename: Ze'ev
authors.initials: Z
authors.lastname: Ronai
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000378:metabolism; D009687:Nuclear Proteins; D010766:Phosphorylation; D011487:Protein Conformation; D011499:Protein Processing, Post-Translational; D011518:Proto-Oncogene Proteins / Q000378:metabolism / Q000502:physiology*; D051736:Proto-Oncogene Proteins c-mdm2; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism / Q000502:physiology*
chemical_list: D009687:Nuclear Proteins; D011518:Proto-Oncogene Proteins; D016159:Tumor Suppressor Protein p53; C497206:MDM2 protein, human; D051736:Proto-Oncogene Proteins c-mdm2