Predicted to enable enzyme binding activity; ubiquitin binding activity; and ubiquitin-protein transferase activator activity. Predicted to be involved in several processes, including ERAD pathway; lipid droplet formation; and lipophagy. Predicted to be located in autophagosome; endoplasmic reticulum; and lipid droplet. Predicted to be part of Hrd1p ubiquitin ligase ERAD-L complex. Predicted to be active in membrane. Predicted to be integral component of endoplasmic reticulum membrane. Orthologous to human AUP1 (AUP1 lipid droplet regulating VLDL assembly factor). [provided by Alliance of Genome Resources, Apr 2022]