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UDP-N-acetylmuramoyl-tripeptide—D-alanyl-D-alanine ligase : ウィキペディア英語版 | UDP-N-acetylmuramoyl-tripeptide—D-alanyl-D-alanine ligase
In enzymology, an UDP-N-acetylmuramoyl-tripeptide—D-alanyl-D-alanine ligase () is an enzyme that catalyzes the chemical reaction :ATP + UDP-N-acetylmuramoyl-L-alanyl-gamma-D-glutamyl-L-lysine + D-alanyl-D-alanine ADP + phosphate + UDP-N-acetylmuramoyl-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D- alanine The 3 substrates of this enzyme are ATP, UDP-N-acetylmuramoyl-L-alanyl-gamma-D-glutamyl-L-lysine, and D-alanyl-D-alanine, whereas its 4 products are ADP, phosphate, UDP-N-acetylmuramoyl-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-, and alanine. This enzyme belongs to the family of ligases, specifically those forming carbon-nitrogen bonds as acid-D-amino-acid ligases (peptide synthases). The systematic name of this enzyme class is UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysine:D-alanyl-D-alanine ligase (ADP-forming). Other names in common use include MurF synthetase, UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-D-alanyl-D-alanine, synthetase, UDP-N-acetylmuramoylalanyl-D-glutamyl-lysine-D-alanyl-D-alanine, ligase, uridine diphosphoacetylmuramoylpentapeptide synthetase, UDPacetylmuramoylpentapeptide synthetase, and UDP-MurNAc-L-Ala-D-Glu-L-Lys:D-Ala-D-Ala ligase. This enzyme participates in lysine biosynthesis and peptidoglycan biosynthesis. ==Structural studies==
As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes and .
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