Predicted to enable cyclin binding activity; ubiquitin conjugating enzyme binding activity; and ubiquitin protein ligase activity. Predicted to be involved in proteasome-mediated ubiquitin-dependent protein catabolic process and protein ubiquitination. Predicted to be located in cytoplasm. Predicted to be part of ubiquitin ligase complex. Predicted to be active in cytosol and nucleus. Orthologous to human UBE3D (ubiquitin protein ligase E3D). [provided by Alliance of Genome Resources, Apr 2022]