ExplorEnz: EC 3.4.16.4

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3.4.16.4

Accepted name:

serine-type D-Ala-D-Ala carboxypeptidase

Reaction:

Preferential cleavage: (Ac)₂-L-Lys-D-Ala┼D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine

Other name(s):

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, MetaCyc, MEROPS, 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 β-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]

[EC 3.4.16.4 created 1989]