Enables p53 binding activity; signaling receptor binding activity; and ubiquitin protein ligase activity. Involved in several processes, including cellular response to hormone stimulus; negative regulation of proteolysis; and response to alkaloid. Located in several cellular components, including cytosol; nucleus; and synapse. Used to study ichthyosis; post-traumatic stress disorder; and transient cerebral ischemia. Biomarker of breast cancer; intermittent claudication; liver disease; pancreatitis; and priapism. Human ortholog(s) of this gene implicated in chronic myeloid leukemia; glioblastoma; hepatocellular carcinoma; pancreatic ductal carcinoma; and sarcoma. Orthologous to human MDM2 (MDM2 proto-oncogene). [provided by Alliance of Genome Resources, Apr 2022]