IUBMB Enzyme Nomenclature


Accepted name: UDP-N-acetylmuramoyl-L-alanyl-D-glutamate—D-lysine ligase

Reaction: ATP + UDP-N-acetyl-α-D-muramoyl-L-alanyl-D-glutamate + D-lysine = ADP + phosphate + UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-Nε-D-lysine

Glossary: muramic acid = 2-amino-3-O-[(R)-1-carboxyethyl]-2-deoxy-D-glucose

Other name(s): UDP-MurNAc-L-Ala-D-Glu:D-Lys ligase; D-lysine-adding enzyme

Systematic name: UDP-N-acetyl-α-D-muramoyl-L-alanyl-D-glutamate:D-lysine γ-ligase (ADP-forming)

Comments: Involved in the synthesis of cell-wall peptidoglycan. The D-lysine is attached to the peptide chain at the N6 position. The enzyme from Thermotoga maritima also performs the reaction of EC, UDP-N-acetylmuramoyl-L-alanyl-D-glutamate—L-lysine ligase.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:


1. Boniface, A., Bouhss, A., Mengin-Lecreulx, D. and Blanot, D. The MurE synthetase from Thermotoga maritima is endowed with an unusual D-lysine adding activity. J. Biol. Chem. 281 (2006) 15680-15686. [PMID: 16595662]

[EC created 2011, modified 2015]

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