Predicted to enable cargo receptor activity. Predicted to be involved in several processes, including endoplasmic reticulum to Golgi vesicle-mediated transport; protein localization to endoplasmic reticulum exit site; and protein transport. Predicted to act upstream of or within cholesterol homeostasis and triglyceride homeostasis. Predicted to be located in endoplasmic reticulum. Predicted to be active in endoplasmic reticulum exit site and endoplasmic reticulum membrane. Orthologous to human MIA2 (MIA SH3 domain ER export factor 2). [provided by Alliance of Genome Resources, Apr 2022]