Reaction catalyzed by glycosylphosphatidylinositol phospholipase D (3.1.4.50)

		+		H2O	=			+
	6-(alpha-D-glucosaminyl)-1-phosphatidyl-1D-myo-inositol	+		H2O	=		6-(alpha-D-glucosaminyl)-1D-myo-inositol	+		3-sn-phosphatidate