Microbial macromolecules and lipid membranes

Microbial macromolecules and lipid membranes encompass the essential structural and functional building blocks of microorganisms, including bacteria, fungi, and viruses. These targets include the cell wall (peptidoglycan), the cytoplasmic and outer membranes, and internal polymers such as nucleic acids and proteins (Silhavy et al., 2010, Cold Spring Harb Perspect Biol). Lipid membranes are vital for maintaining cellular homeostasis, acting as selective barriers, and supporting membrane-bound enzymes involved in energy metabolism (Strahl & Errington, 2017, Nat Rev Microbiol). Antimicrobial agents target these components through various mechanisms: beta-lactams inhibit cell wall synthesis, while polymyxins and daptomycin physically disrupt the lipid bilayer (Nation et al., 2014, Lancet Infect Dis). In fungi, drugs like amphotericin B target ergosterol, a specific lipid macromolecule not found in human cells, to induce membrane leakage (Gray et al., 2012, PNAS). While these targets offer pathways for selective toxicity, challenges include the development of antimicrobial resistance and potential off-target effects on host cell membranes, leading to toxicity in clinical settings.

Other names

Microbial cell envelopeBacterial cell wall and membraneFungal cell membraneMicrobial biopolymers

Inhibition of cell wall synthesis, disruption of membrane integrity, and inhibition of macromolecular biosynthesis.