acetylglucosaminyltransferase activity undecaprenyldiphospho-muramoylpentapeptide beta-N-acetylglucosaminyltransferase activity https://github.com/geneontology/go-ontology/issues/28070 MetaCyc:RXN-8976 RHEA:23192 UDP-N-acetyl-D-glucosamine:N-acetyl-alpha-D-muramyl(oyl-L-Ala- gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol beta-1,4-N-acetylglucosaminlytransferase activity UDP-N-acetylglucosamine--N-acetylmuramyl-(pentapeptide) pyrophosphoryl-undecaprenol N-acetylglucosamine transferase activity undecaprenyl-PP-MurNAc-pentapeptide-UDPGlcNAc GlcNAc transferase activity molecular_function GO:0050511 MurG transferase activity Catalysis of the reaction: Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-di-trans,octa-cis-undecaprenyl diphosphate + UDP-N-acetyl-alpha-D-glucosamine = beta-D-GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamm-D-Glu-L-Lys-D-Ala-D-Ala)-di-trans,octa-cis-undecaprenyl diphosphate + H+ + UDP. undecaprenyldiphospho-muramoylpentapeptide b-N-acetylglucosaminyltransferase activity