Predicted to enable RNA binding activity; protein heterodimerization activity; and protein homodimerization activity. Predicted to contribute to ubiquitin-protein transferase activity. Involved in positive regulation of apoptotic process and spermatogenesis. Located in cytoplasm and nucleus. Human ortholog(s) of this gene implicated in breast cancer and ovarian cancer. Orthologous to human BARD1 (BRCA1 associated RING domain 1). [provided by Alliance of Genome Resources, Apr 2022]