. "\"Catalysis of the reaction: beta-D-glucuronosyl-(1,4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan + UDP-N-acetyl-D-glucosamine = N-acetyl-alpha-D-glucosaminyl-(1,4)-beta-D-glucuronosyl-(1,4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan + UDP.\" [EC:2.4.1.224, MetaCyc:2.4.1.224-RXN]" . . "glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity" . "alpha-N-acetylglucosaminyltransferase II activity" . "glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-a-N-acetylglucosaminyltransferase activity" . "glucuronyl-N-acetylglucosaminylproteoglycan alpha-1,4-N-acetylglucosaminyltransferase activity" . "UDP-N-acetyl-D-glucosamine:beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity" . "EC:2.4.1.224" . "MetaCyc:2.4.1.224-RXN" . .