Term Name:	glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity
Synonyms:	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
Definition:	Catalysis of the reaction: 3-O-{[(1->4)-beta-D-GlcA-(1->4)-alpha-D-GlcNAc](n)-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl}-L-seryl-[protein] + UDP-N-acetyl-alpha-D-glucosamine = 3-O-{alpha-D-GlcNAc-[(1->4)-beta-D-GlcA-(1->4)-alpha-D-GlcNAc](n)-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl}-L-seryl-[protein] + H+ + UDP.
Ontology:	GO: Molecular Function [GO:0050508]    QuickGO    AmiGO