6.3.2.7: UDP-N-acetylmuramoyl-L-alanyl-D-glutamate-L-lysine ligase
This is an abbreviated version!
For detailed information about UDP-N-acetylmuramoyl-L-alanyl-D-glutamate-L-lysine ligase, go to the full flat file.
Reaction
Synonyms
MuE, MurE, Synthetase, uridine diphospho-N-acetylmuramoylalanyl-D-glutamyllysine, UDP-N-acetylmuramoyl-L-alanyl-D-glutamate-lysine ligase, UDP-N-acetylmuramoyl-L-alanyl-D-glutamate: L-lysine ligase, UDP-N-acetylmuramoyl-L-alanyl-D-glutamate:L-lysine ligase, UDP-N-acetylmuramoyl-L-alanyl-D-glutamate:meso-2,6-diaminopimelate ligase, UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysine synthetase, uridine 5'-diphospho-N-acetylmuramoyl L-alanyl-D-glutamate:lysine ligase, Uridine diphospho-N-acetylmuramoylalanyl-D-glutamyllysine synthetase
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Natural Substrates Products on EC 6.3.2.7 - UDP-N-acetylmuramoyl-L-alanyl-D-glutamate-L-lysine ligase
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REACTION DIAGRAM
ATP + UDP-N-acetylmuramoyl-L-Ala-D-Glu + L-Lys
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one step in the biosynthesis of bacterial cell walls
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ATP + UDP-N-acetylmuramoyl-L-alanyl-D-glutamate + L-lysine
ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysine
ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysine
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ATP + UDP-N-acetylmuramoyl-L-alanyl-D-glutamate + L-lysine
ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysine
the enzyme of the Gram-positive bacterium discriminates between L-lysine and D,L-diaminopimelic acid, the predominant amino acid that replaces L-lysine in Gram-negative peptidoglycan. Despite the absolute specificity for L-lysine, Staphylococcus aureus MurE binds this substrate relatively poorly. In vivo analysis and metabolomic data reveal that this is compensated for by high cytoplasmic L-lysine concentrations
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the third amino acid added to the peptide stem of peptidoglycan is usually either meso-diaminopimelic acid (in most Gram-negative bacteria), EC 6.3.2.13, or L-lysine (in most Gram-positive bacteria), EC 6.3.2.7
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additional information
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the third amino acid added to the peptide stem of peptidoglycan is usually either meso-diaminopimelic acid (in most Gram-negative bacteria), EC 6.3.2.13, or L-lysine (in most Gram-positive bacteria), EC 6.3.2.7, although in some cases other amino acids are found at this position
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