| GO | Name |
| GO:0000030 | mannosyltransferase activity |
| GO:0004376 | glycolipid mannosyltransferase activity |
| GO:0005789 | endoplasmic reticulum membrane |
| GO:0006506 | GPI anchor biosynthetic process |
| GO:0016021 | integral component of membrane |
| GO:0016254 | preassembly of GPI anchor in ER membrane |
| GO:0051751 | alpha-1,4-mannosyltransferase activity |
| GO:1990529 | glycosylphosphatidylinositol-mannosyltransferase I complex |