The Enzyme Database

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Accepted name: undecaprenyldiphospho-muramoylpentapeptide β-N-acetylglucosaminyltransferase
Reaction: UDP-N-acetylglucosamine + Mur2Ac(oyl-L-Ala-γ-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol = UDP + GlcNAc-(1→4)-Mur2Ac(oyl-L-Ala-γ-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol
For diagram of peptidoglycan biosynthesis (part 2), click here
Other name(s): MurG transferase; UDP-N-acetyl-D-glucosamine:N-acetyl-α-D-muramyl(oyl-L-Ala-γ-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol β-1,4-N-acetylglucosaminlytransferase
Systematic name: UDP-N-acetyl-D-glucosamine:N-acetyl-α-D-muramyl(oyl-L-Ala-γ-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol 4-β-N-acetylglucosaminlytransferase
Comments: The enzyme also works when the lysine residue is replaced by meso-2,6-diaminoheptanedioate (meso-2,6-diaminopimelate, A2pm) combined with adjacent residues through its L-centre, as it is in Gram-negative and some Gram-positive organisms. The undecaprenol involved is ditrans,octacis-undecaprenol (for definitions, click here).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 60976-26-3
1.  van Heijenoort, J. Recent advances in the formation of the bacterial peptidoglycan monomer unit. Nat. Prod. Rep. 18 (2001) 503–519. [PMID: 11699883]
[EC created 2002]

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