Bacterial cell wall enzyme

Bacterial cell wall enzymes are a broad group comprising several essential proteins responsible for the synthesis, remodeling, and turnover of the bacterial cell wall, primarily peptidoglycan[1][2][5]. Principal members include transglycosylases (which polymerize glycan strands), transpeptidases (which crosslink peptide stems; these include penicillin-binding proteins or PBPs), autolysins (which break glycosidic or peptide bonds for cell growth and division), flippases (which transport precursors across the membrane), and supporting proteins such as SEDS proteins and l,d-transpeptidases[1][4][5]. These enzymes maintain cell shape, protect against osmotic lysis, and are critical for bacterial viability. They are the targets of multiple major antibiotic classes (notably beta-lactams), and their inhibition is a central strategy for antibacterial therapy[2][5]. However, resistance commonly arises via modification of these targets (e.g., altered PBPs), posing a significant therapeutic challenge. Notes on is_incorrect: The term "Bacterial cell wall enzymes/proteins" is not a canonical target name, but a collective label for multiple functionally and structurally distinct enzymes and proteins. For structured data or drug targeting, individual component targets (such as "Penicillin-binding protein 2", "Transglycosylase", "Autolysin", etc.) should be specified for clarity and actionable information.

Other names

Peptidoglycan biosynthetic enzymepenicillin-binding protein (PBP)transglycosylasetranspeptidaseautolysinflippase (e.g., MurJ)lytic transglycosylaseSEDS protein

Inhibition of transpeptidases (prevents crosslinking of cell wall, e.g., by beta-lactams)[5][2]; Inhibition of transglycosylases (blocks polymerization of glycan chains)[1][5]; Disruption of precursor synthesis or transport (e.g., by fosfomycin, bacitracin); Interference with peptidoglycan remodeling (e.g., by autolysin modulators)[4]