Predicted to enable MHC class I protein binding activity. Predicted to be involved in several processes, including cellular calcium ion homeostasis; positive regulation of proteolysis; and protein localization to organelle. Predicted to act upstream of or within immune response and spermatogenesis. Located in Golgi cisterna membrane; clathrin-coated vesicle; and endoplasmic reticulum membrane. Human ortholog(s) of this gene implicated in deafness, dystonia, and cerebral hypomyelination and sensorineural hearing loss. Orthologous to human BCAP31 (B cell receptor associated protein 31). [provided by Alliance of Genome Resources, Apr 2022]