Predicted to enable calcium-dependent protein binding activity and structural molecule activity. Predicted to be involved in several processes, including COPII-coated vesicle cargo loading; endoplasmic reticulum organization; and response to calcium ion. Predicted to act upstream of or within protein transport and vesicle-mediated transport. Located in COPII-coated ER to Golgi transport vesicle and endoplasmic reticulum exit site. Orthologous to human SEC31A (SEC31 homolog A, COPII coat complex component). [provided by Alliance of Genome Resources, Apr 2022]