Predicted to enable metal ion binding activity and ubiquitin-protein transferase activity. Predicted to be involved in protein ubiquitination. Is an ortholog of C. elegans hecd-1. In C. elegans, hecd-1 is involved in several processes, including hemidesmosome assembly; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; and regulation of Notch signaling pathway.