Predicted to enable alpha-1,2-mannosyltransferase activity. Predicted to be involved in GPI anchor biosynthetic process. Predicted to be located in endoplasmic reticulum. Predicted to be active in endoplasmic reticulum membrane. Orthologous to human PIGZ (phosphatidylinositol glycan anchor biosynthesis class Z). [provided by Alliance of Genome Resources, Apr 2022]