Cell wall enzymes

Cell wall enzymes are a broad class of proteins essential for the synthesis, assembly, and maintenance of the protective cell wall in bacteria and fungi [2, 13]. In bacteria, these enzymes are primarily involved in the multi-stage biosynthesis of peptidoglycan, a structural polymer that provides mechanical strength and protects against osmotic pressure [8, 15]. Key bacterial members include the Mur family of enzymes, which catalyze early cytoplasmic steps, and penicillin-binding proteins (PBPs), which facilitate the final cross-linking of the cell wall in the periplasm [4, 11]. In fungi, enzymes such as beta-1,3-glucan synthase and chitin synthase are responsible for producing the core polysaccharides that maintain fungal structural integrity [3, 14]. Because human cells lack a cell wall, these enzymes are ideal therapeutic targets, allowing for high selective toxicity in the treatment of infectious diseases [7, 10]. Drugs targeting these enzymes, including beta-lactams (e.g., penicillins) and echinocandins, are cornerstone therapies for bacterial and fungal infections, respectively [5, 12]. However, the clinical utility of these drugs is frequently challenged by the development of resistance mechanisms, such as the production of inactivating enzymes or mutations in the target enzymes themselves [9, 20].

Other names

Cell wall biosynthetic enzymesPeptidoglycan biosynthetic enzymesCell wall remodeling enzymesCell wall synthesis enzymes

Inhibition of enzymes involved in the synthesis and cross-linking of cell wall components, such as peptidoglycan in bacteria and beta-glucans in fungi, leading to loss of structural integrity and cell lysis.