Predicted to enable ubiquitin protein ligase activity. Predicted to be involved in ERAD pathway and proteasome-mediated ubiquitin-dependent protein catabolic process. Predicted to act upstream of or within protein ubiquitination. Predicted to be located in endoplasmic reticulum membrane. Predicted to be active in endoplasmic reticulum quality control compartment. Orthologous to human SYVN1 (synoviolin 1).