Catalytic mechanism of the Streptomyces K15 DD-transpeptidase/penicillin-binding protein probed by site-directed mutagenesis and structural analysis.
Rhazi, N., Charlier, P., Dehareng, D., Engher, D., Vermeire, M., Frere, J.M., Nguyen-Disteche, M., Fonze, E.(2003) Biochemistry 42: 2895-2906
- PubMed: 12627955 
- DOI: 10.1021/bi027256x
- Primary Citation of Related Structures:  
1ES2, 1ES3, 1ES4, 1J9M - PubMed Abstract: 
The Streptomyces K15 penicillin-binding DD-transpeptidase is presumed to be involved in peptide cross-linking during bacterial cell wall peptidoglycan assembly. To gain insight into the catalytic mechanism, the roles of residues Lys38, Ser96, and Cys98, belonging to the structural elements defining the active site cleft, have been investigated by site-directed mutagenesis, biochemical studies, and X-ray diffraction analysis ...