Predicted to be involved in endoplasmic reticulum to Golgi vesicle-mediated transport and protein localization to endoplasmic reticulum exit site. Predicted to act upstream of or within protein transport and vesicle-mediated transport. Predicted to be located in endoplasmic reticulum and membrane. Predicted to be active in endoplasmic reticulum membrane. Orthologous to human BCAP29 (B cell receptor associated protein 29).