label: acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase activity
label_lc: acetylgalactosaminyl-o-glycosyl-glycoprotein beta-1,6-n-acetylglucosaminyltransferase activity
description: "Catalysis of the reaction: N-acetyl-beta-D-glucosaminyl-1,3-N-acetyl-D-galactosaminyl-R + UDP-N-acetyl-D-glucosamine = N-acetyl-beta-D-glucosaminyl-1,6-(N-acetyl-beta-D-glucosaminyl-1,3)-N-acetyl-D-galactosaminyl-R + UDP."