acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase activity obsolete acetylgalactosaminyl-O-glycosyl-seryl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase activity https://github.com/geneontology/go-ontology/issues/28070 true hjd molecular_function GO:0106325 2020-09-30T13:37:55Z OBSOLETE. Catalysis of the reaction: 3-O-[N-acetyl-beta-D-glucosaminyl-(1->3)-N-acetyl-alpha-D-galactosaminyl]-L-seryl-[protein] + UDP-N-acetyl-alpha-D-glucosamine = 3-O-[N-acetyl-beta-D-glucosaminyl-(1->3)-[N-acetyl-beta-D-glucosaminyl-(1->6)]-N-acetyl-alpha-D-galactosaminyl]-L-seryl-[protein] + H+ + UDP. This term was obsoleted because it is more specific than the activity of any known enzyme. The activity corresponds to acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase activity ; GO:0047225.