EOG86X1SG GO:0017176 5/27 phosphatidylinositol N-acetylglucosaminyltransferase activity molecular_function "Catalysis of the reaction: UDP-N-acetyl-D-glucosamine + phosphatidylinositol = UDP + N-acetyl-D-glucosaminylphosphatidylinositol." [EC:2.4.1.198]