D-alanine
Reaction: Cleavage of the bond UDP-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-6-carboxy-L-lysyl-D-alanylD-alanine
Other name(s): D-alanine carboxypeptidase I; DD-carboxypeptidase; D-alanine carboxypeptidase; D-alanyl-D-alanine carboxypeptidase; D-alanine-D-alanine-carboxypeptidase; carboxypeptidase D-alanyl-D-alanine; carboxypeptidase I; UDP-N-acetylmuramoyl-tetrapeptidyl-D-alanine alanine-hydrolase; D-alanyl-D-alanine peptidase; DD-peptidase; penicillin binding protein 5; PBP5; PdcA; VanY; VanX (ambiguous)
Comments: A bacterial enzyme that requires a divalent cation for activity. Does not cleave the C-terminal D-alanine from the product of the above reaction, UDP-N-acetyl-muramoyl-L-alanyl-D-γ-glutamyl-6-carboxy-L-lysyl-D-alanine. Competitively inhibited by penicillins and cephalosporins.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 9077-67-2
References:
1. Izaki, K. and Strominger, J.L. Biosynthesis of the peptidoglycan of bacterial cell walls. XIV. Purification and properties of two D-alanine carboxypeptidases from Escherichia coli. J. Biol. Chem. 243 (1968) 3193-3201. [PMID: 4871206]