D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine
Reaction: Preferential cleavage: (Ac)2-L-Lys-D-AlaD-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine
Other names: DD-peptidase; D-alanyl-D-alanine-carboxypeptidase; D-alanyl-D-alanine-cleaving-peptidase; D-alanyl-D-alanine-cleaving peptidase; DD-transpeptidase; D-alanine carboxypeptidase; DD-carboxypeptidase; D-alanyl carboxypeptidase
Comments: A membrane-bound, bacterial enzyme inhibited by penicillin and other β-lactam antibiotics, which acylate the active site serine. Examples are known from peptidase families S11, S12 and S13. Distinct from EC 3.4.17.14, zinc D-Ala-D-Ala carboxypeptidase
Links to other databases: BRENDA, EXPASY, KEGG, MEROPS, Metacyc, PDB, CAS registry number: 9077-67-2
References
1. Ghuysen, J.-M., Frère, J.-M., Leyh-Bouille, M., Nguyen-Distèche, M., Coyette, J., Dusart, J., Joris, B., Duez, C., Dideberg, O., Charlier, P., Dive, G., and Lamotte-Brasseur, J. Bacterial wall peptidoglycan, DD-peptidases and beta-lactam antibiotics. Scand. J. Infect. Dis. Suppl. 42 (1984) 17-37. [PMID: 6597561]
2. Frère, J.M. and Joris, B. Penicillin-sensitive enzymes in peptidoglycan biosynthesis. CRC Crit. Rev. Microbiol. 11 (1985) 306-331. [PMID: 3888533]