Function in SwissProt
E3 ubiquitin-protein ligase that mediates ubiquitination of p53/TP53, leading to its degradation by the proteasome. Inhibits p53/TP53- and p73/TP73-mediated cell cycle arrest and apoptosis by binding its transcriptional activation domain. Also acts as a ubiquitin ligase E3 toward itself and ARRB1. Permits the nuclear export of p53/TP53. Promotes proteasome-dependent ubiquitin-independent degradation of retinoblastoma RB1 protein. Inhibits DAXX-mediated apoptosis by inducing its ubiquitination and degradation. Component of the TRIM28/KAP1-MDM2-p53/TP53 complex involved in stabilizing p53/TP53. Also component of the TRIM28/KAP1-ERBB4-MDM2 complex which links growth factor and DNA damage response pathways. Mediates ubiquitination and subsequent proteasome degradation of DYRK2 in nucleus. Ubiquitinates IGF1R and SNAI1 and promotes them to proteasomal degradation (PubMed:12821780, PubMed:15053880, PubMed:15195100, PubMed:15632057, PubMed:16337594, PubMed:17290220, PubMed:19098711, PubMed:19219073, PubMed:19837670, PubMed:19965871, PubMed:20173098, PubMed:20385133, PubMed:20858735, PubMed:22128911). Ubiquitinates DCX, leading to DCX degradation and reduction of the dendritic spine density of olfactory bulb granule cells (By similarity). Ubiquitinates DLG4, leading to proteasomal degradation of DLG4 which is required for AMPA receptor endocytosis (By similarity). Negatively regulates NDUFS1, leading to decreased mitochondrial respiration, marked oxidative stress, and commitment to the mitochondrial pathway of apoptosis (PubMed:30879903). Binds NDUFS1 leading to its cytosolic retention rather than mitochondrial localization resulting in decreased supercomplex assembly (interactions between complex I and complex III), decreased complex I activity, ROS production, and apoptosis (PubMed:30879903).
Biological Process
Diagram with PDB data |
MDM2/USP7 | The Crystal Structure of the N-terminal domain of HAUSP/USP7 complexed with mdm2 peptide 147-150 |
MDM2 | NMR structure of unliganded MDM2 |
MDM2/MDM4 | Crystal Structure of the MDM2-MDMX RING Domain Heterodimer |
See also |
Diagram with PDB data |
FOXO3/YWHAE | Crystal Structure of 14-3-3 epsilon with FOXO3a peptide |
TP53/EP300 | Structural Basis for the Regulation of p53 Function by p300 |
TP53/CREBBP | NMR Structure of CBP Bromodomain in complex with p53 peptide |
TP53/SETD7 | Crystal structure of a ternary complex of the methyltransferase SET9 (also known as SET7/9) with a P53 peptide and SAH |
TP53/SMYD2 | Structure of SMYD2 in complex with p53 and SAH |
TP53/MDM2 | Crystal Structure of an MDM2/P53 Peptide Complex |
TP53/MDM4 | Structure of the human Mdmx protein bound to the p53 tumor suppressor transactivation domain |
FOXO1/SFN | 14-3-3 sigma in complex with FOXO1 pT24 peptide |