Predicted to be involved in phosphatidylinositol biosynthetic process. Predicted to be located in endoplasmic reticulum; endosome; and membrane. Predicted to be part of PAS complex. Predicted to be active in endosome membrane. Human ortholog(s) of this gene implicated in striatonigral degeneration. Orthologous to human VAC14 (VAC14 component of PIKFYVE complex).