glycoprotein-fucosylgalactoside alpha-N-acetylgalactosaminyltransferase activity https://github.com/geneontology/go-ontology/issues/30193 RHEA:19021 UDP-N-acetyl-D-galactosamine:alpha-L-fucosyl-1,2-D-galactose 3-N-acetyl-D-galactosaminyltransferase activity histo-blood group A glycosyltransferase (Fucalpha1->2Galalpha1->3-N-acetylgalactosaminyltransferase) RHEA:84535 RHEA:84511 fucosylgalactose alpha-N-acetylgalactosaminyltransferase activity RHEA:84499 UDP-N-acetyl-D-galactosamine:glycoprotein-alpha-L-fucosyl-(1,2)-D-galactose 3-N-acetyl-D-galactosaminyltransferase activity molecular_function Reactome:R-HSA-9034042 RHEA:84539 EC:2.4.1.40 A transferase activity MetaCyc:2.4.1.40-RXN histo-blood group A acetylgalactosaminyltransferase activity blood-group substance alpha-acetyltransferase activity A-transferase activity fucosylglycoprotein alpha-N-acetylgalactosaminyltransferase activity RHEA:84507 fucosylgalactose acetylgalactosaminyltransferase activity blood-group substance A-dependent acetylgalactosaminyltransferase activity GO:0004380 Catalysis of the reaction: UDP-N-acetyl-D-galactosamine + glycoprotein-alpha-L-fucosyl-(1,2)-D-galactose = UDP + glycoprotein-N-acetyl-alpha-D-galactosaminyl-(1,3)-(alpha-L-fucosyl-(1,2))-D-galactose. UDP-GalNAc:Fucalpha1->2Galalpha1->3-N-acetylgalactosaminyltransferase activity histo-blood group A transferase activity alpha-3-N-acetylgalactosaminyltransferase activity Reactome:R-HSA-9033959 acetylgalactosaminyltransferase activity catalytic activity, acting on a glycoprotein