Predicted to enable ubiquitin protein ligase activity. Predicted to be involved in positive regulation of I-kappaB kinase/NF-kappaB signaling and protein ubiquitination. Predicted to be located in early endosome. Predicted to be part of ubiquitin ligase complex. Predicted to be active in cytoplasm. Orthologous to human MIB2 (MIB E3 ubiquitin protein ligase 2). [provided by Alliance of Genome Resources, Apr 2022]