Microbial cell membrane and cellular component

Microbial cell membranes and cellular components represent a broad class of structural targets essential for the survival and pathogenesis of bacteria, fungi, and parasites. These components, primarily the lipid bilayer and associated cell wall structures, maintain osmotic pressure, facilitate nutrient transport, and house critical enzymes for energy metabolism (Hurdle et al., 2011). In bacteria, the cytoplasmic membrane is the site of oxidative phosphorylation, while in fungi, the presence of ergosterol distinguishes the membrane from human cholesterol-rich membranes (Mesa-Arango et al., 2012). Therapeutic agents like polymyxins and daptomycin target these structures by inducing physical disruption or depolarization, which results in the rapid loss of intracellular ions and metabolites (StatPearls, 2023). Other agents, such as amphotericin B, exploit differences in lipid composition to create lethal pores in fungal membranes (PubChem). Because these targets are structural rather than single proteins, they are less prone to certain types of rapid mutational resistance, though they present challenges regarding systemic toxicity and selectivity (Hurdle et al., 2011).

Other names

Microbial cell membranes and cellular componentsBacterial cell membraneFungal cell membraneCytoplasmic membranePlasma membraneMicrobial cell wall

Disruption of membrane integrity through pore formation, depolarization of the membrane potential, or binding to specific lipid components such as ergosterol or lipid II, leading to cytoplasmic leakage and cell death (Hurdle et al., 2011; StatPearls, 2023).