undecaprenyldiphospho-muramoylpentapeptide beta-N-acetylglucosaminyltransferase; MurG transferase; UDP-N-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; • • •