Predicted to enable ubiquitin conjugating enzyme binding activity and ubiquitin protein ligase activity. Predicted to be involved in protein polyubiquitination and ubiquitin-dependent protein catabolic process. Predicted to be located in cytoplasm. Predicted to be part of ubiquitin ligase complex. Is an ortholog of human ARIH2 (ariadne RBR E3 ubiquitin protein ligase 2).