UniprotKB/SwissProt ID: RFWD3_HUMAN (Q6PCD5)
Gene Name: RFWD3
Synonyms: RNF201
Organism: Homo sapiens (Human).
Function: E3 ubiquitin-protein ligase that mediates the ubiquitination of p53/TP53 in the late response to DNA damage, and acts as a positive regulator of p53/TP53 stability, thereby regulating the G1/S DNA damage checkpoint. May act by catalyzing the formation of short polyubiquitin chains on p53/TP53 that are not targeted to the proteasome. In response to ionizing radiation, interacts with MDM2 and enhances p53/TP53 ubiquitination, possibly by restricting MDM2 from extending polyubiquitin chains on ubiquitinated p53/TP53. Plays a role in RPA-mediated DNA damage signaling and repair.
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Nucleus. Nucleus, PML body. Cytoplasm. Note=In undamaged cells, found both in the cytoplasm and in the nucleus, partially associated with PML nuclear bodies. In response to replication block, such as that caused by hydroxyurea treatment, or to DNA damage
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