Predicted to enable glucosaminyl-phosphatidylinositol O-acyltransferase activity. Predicted to be involved in protein localization to plasma membrane. Predicted to be located in endoplasmic reticulum membrane. Human ortholog(s) of this gene implicated in hyperphosphatasia with impaired intellectual development syndrome 5. Is an ortholog of human PIGW (phosphatidylinositol glycan anchor biosynthesis class W).