Predicted to enable misfolded protein binding activity; signal recognition particle binding activity; and ubiquitin-specific protease binding activity. Acts upstream of or within retrograde protein transport, ER to cytosol and suckling behavior. Located in early endosome; endoplasmic reticulum; and late endosome. Is expressed in yolk sac and yolk sac endoderm. Orthologous to human DERL2 (derlin 2). [provided by Alliance of Genome Resources, Apr 2022]