Predicted to enable ubiquitin protein ligase activity. Predicted to be involved in endosome to lysosome transport; negative regulation of signal transduction; and protein monoubiquitination. Predicted to act upstream of or within protein polyubiquitination. Predicted to be located in endoplasmic reticulum. Predicted to be active in early endosome; nucleus; and plasma membrane. Orthologous to human MGRN1 (mahogunin ring finger 1). [provided by Alliance of Genome Resources, Apr 2022]