Download MendeleyDeciphering how Cpl-7 cell wall-binding repeats recognize the bacterial peptidoglycan.
Bustamante, N., Iglesias-Bexiga, M., Bernardo-Garcia, N., Silva-Martin, N., Garcia, G., Campanero-Rhodes, M.A., Garcia, E., Uson, I., Buey, R.M., Garcia, P., Hermoso, J.A., Bruix, M., Menendez, M.(2017) Sci Rep 7: 16494-16494
- PubMed: 29184076
- DOI: https://doi.org/10.1038/s41598-017-16392-4
- Primary Citation of Related Structures:
4CVD, 5I8L - PubMed Abstract:
Endolysins, the cell wall lytic enzymes encoded by bacteriophages to release the phage progeny, are among the top alternatives to fight against multiresistant pathogenic bacteria; one of the current biggest challenges to global health. Their narrow range of susceptible bacteria relies, primarily, on targeting specific cell-wall receptors through specialized modules. The cell wall-binding domain of Cpl-7 endolysin, made of three CW_7 repeats, accounts for its extended-range of substrates. Using as model system the cell wall-binding domain of Cpl-7, here we describe the molecular basis for the bacterial cell wall recognition by the CW_7 motif, which is widely represented in sequences of cell wall hydrolases. We report the crystal and solution structure of the full-length domain, identify N-acetyl-D-glucosaminyl-(β1,4)-N-acetylmuramyl-L-alanyl-D-isoglutamine (GMDP) as the peptidoglycan (PG) target recognized by the CW_7 motifs, and characterize feasible GMDP-CW_7 contacts. Our data suggest that Cpl-7 cell wall-binding domain might simultaneously bind to three PG chains, and also highlight the potential use of CW_7-containing lysins as novel anti-infectives.
Organizational Affiliation:
Instituto de Química-Física Rocasolano, Consejo Superior de Investigaciones Científicas, Serrano 119, 28006, Madrid, Spain.
