Enables calcium ion binding activity. Acts upstream of or within several processes, including ER overload response; calcium ion homeostasis; and ubiquitin-dependent ERAD pathway. Located in rough endoplasmic reticulum. Is expressed in several structures, including alimentary system; cerebellum external granule cell layer; liver; neural retina; and yolk sac. Orthologous to human CCDC47 (coiled-coil domain containing 47). [provided by Alliance of Genome Resources, Apr 2022]