6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + (S)-Ala-gamma-(R)-Glu-(R,R)-alpha-benzyl-lanthionine - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-(S)-Ala-gamma-(R)-Glu-(R,R)-alpha-benzyl-lanthionine - ? 443206 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + (S)-Ala-gamma-(R)-Glu-(R,S)-alpha-benzyl-lanthionine - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-(S)-Ala-gamma-(R)-Glu-(R,S)-alpha-benzyl-lanthionine - ? 443207 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + (S)-Ala-gamma-(R)-Glu-p-amino-(S)-phenylalanine - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-(S)-Ala-gamma-(R)-Glu-p-amino-(S)-phenylalanine - ? 443208 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + (S)-Ala-gamma-(R)-Glu-p-nitro-(S)-phenylalanine - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-(S)-Ala-gamma-(R)-Glu-p-nitro-(S)-phenylalanine - ? 443209 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + L-Ala-D-Glu - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-L-Ala-D-Glu - ? 428412 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + L-Ala-gamma-D-Glu-L-Lys - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-L-Ala-gamma-D-Glu-L-Lys - ? 428414 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + L-Ala-gamma-D-Glu-L-Lys-D-Ala - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala - ? 428413 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + L-alanyl-gamma-D-glutamyl-meso-2,6-diaminoheptanedioate - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-D-gamma-glutamyl-meso-2,6-diaminoheptanedioate - ? 427398 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + L-alanyl-gamma-D-glutamyl-meso-2,6-diaminoheptanedioate the recycling enzyme allows reincorporation into peptidoglycan (murein) of the tripeptide L-alanyl-gamma-D-glutamyl-meso-2,6-diaminoheptanedioate released during the maturation and constant remodeling of this bacterial cell wall polymer that occur during cell growth and division. The enzyme adds this peptide to UDP-N-acetylmuramate, thereby providing an economical additional source of UDP-MurNAc-tripeptide available for de novo peptidoglycan biosynthesis Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-D-gamma-glutamyl-meso-2,6-diaminoheptanedioate - ? 427398 6.3.2.45 ATP + UDP-N-alpha-D-acetylmuramate + L-alanyl-gamma-D-glutamyl-meso-2,6-diaminoheptanedioyl-D-alanine - Escherichia coli ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-D-gamma-glutamyl-meso-2,6-diaminoheptanedioyl-D-alanine - ? 428415