Bacterial and fungal cell wall component (None in common use; scientific literature generally refers to individual components (e.g., peptidoglycan, chitin, glucan) rather than a combined abbreviation)

Bacterial and fungal cell wall components comprise the structural exoskeletons surrounding microbial cells, crucial for the maintenance of cell shape, protection from environmental threats, and osmotic regulation. In bacteria, the cell wall is primarily composed of peptidoglycan, a macromolecular lattice unique to prokaryotes and the principal target of classic antibiotics such as β-lactams and glycopeptides. Fungal cell walls, by contrast, consist mainly of chitin, β-(1,3)-glucan and β-(1,6)-glucan, mannoproteins, and glycosylphosphatidylinositol (GPI)-anchored proteins. These components confer rigidity, mediate adhesion, contribute to immune evasion, and are unique to fungi, making them prime targets for antifungal drugs like echinocandins and investigational agents such as ibrexafungerp and nikkomycin Z. Both bacterial and fungal cell wall targets offer avenues for antimicrobial therapy and diagnostic biomarker development. However, cell wall plasticity and biosynthetic redundancy in these organisms can complicate treatment efficacy and drive drug resistance.

Other names

Bacterial cell wallFungal cell wallPeptidoglycan (bacteria-specific)Chitin, β-(1,3)-glucan, mannoproteins, GPI-anchored proteins (fungi-specific)

Inhibition of cell wall biosynthesis enzymes (β-glucan synthase, chitin synthase, transpeptidases) Disruption of cell wall integrity leading to cell lysis Inhibition of glycosylation or anchor biosynthesis pathways (GPI) Immune system targeting exposed components, exploiting unmaksed wall antigens