Predicted to be involved in secretion. Predicted to act upstream of or within exocytosis. Predicted to be located in late endosome and recycling endosome. Predicted to be active in exocytic vesicle. Human ortholog(s) of this gene implicated in familial hemophagocytic lymphohistiocytosis 3. Orthologous to human UNC13D (unc-13 homolog D).