E3 ubiquitin and SUMO-protein ligase that plays a role in different biological processes such as innate immunity, inflammation or apoptosis (PubMed:15001576, PubMed:37086853). Potentiates MAP3K3-mediated activation of JUN/AP1 and DDIT3 transcriptional regulators (PubMed:14743216). Negatively regulates MYB transcriptional activity by sequestering it to the cytosol via SUMOylation (By similarity). Plays a role in the phosphorylation of MAPK1 and/or MAPK3, probably via its interaction with MAP3K3. Negatively regulates RLR-mediated innate immunity by promoting ‘Lys-48’-linked ubiquitination of TBK1 through its RING domain to inhibit the cellular antiviral response (PubMed:37086853). Promotes ‘Lys-29’-linked polyubiquitination of NEMO/IKBKG and RELA leading to targeting these two proteins to lysosomal degradative pathways, reducing the transcriptional activity of NF-kappa-B (PubMed:21518757).
