Crystal structure of a D-aminopeptidase from Ochrobactrum anthropi, a new member of the 'penicillin-recognizing enzyme' family.Bompard-Gilles, C., Remaut, H., Villeret, V., Prange, T., Fanuel, L., Delmarcelle, M., Joris, B., Frere, J., Van Beeumen, J.
(2000) Structure 8: 971-980
- PubMed: 10986464
- DOI: https://doi.org/10.1016/s0969-2126(00)00188-x
- Primary Citation of Related Structures:
- PubMed Abstract:
beta-Lactam compounds are the most widely used antibiotics. They inactivate bacterial DD-transpeptidases, also called penicillin-binding proteins (PBPs), involved in cell-wall biosynthesis. The most common bacterial resistance mechanism against beta-lactam compounds is the synthesis of beta-lactamases that hydrolyse beta-lactam rings. These enzymes are believed to have evolved from cell-wall DD-peptidases. Understanding the biochemical and mechanistic features of the beta-lactam targets is crucial because of the increasing number of resistant bacteria. DAP is a D-aminopeptidase produced by Ochrobactrum anthropi. It is inhibited by various beta-lactam compounds and shares approximately 25% sequence identity with the R61 DD-carboxypeptidase and the class C beta-lactamases.
Laboratorium voor Eiwitbiochemie en Eiwitengineering, Rijksuniversiteit-Gent, K.L. Ledeganckstraat, 35, B-9000, Gent, Belgium.