Microbial cell membrane lipids and membrane-associated proteins

Microbial cell membrane lipids and membrane-associated proteins represent a fundamental therapeutic target class encompassing the structural and functional components of bacterial and fungal boundaries (Source 1.5.1). These targets are essential for maintaining selective permeability, osmotic balance, and energy transduction via membrane-bound enzymes like ATP synthase (Source 1.3.1, 1.5.5). Antibacterial agents such as polymyxins and daptomycin specifically interact with membrane lipids like lipopolysaccharides and phosphatidylglycerol to cause membrane permeabilization and depolarization (Source 1.1.1, 1.2.1). In fungi, polyene antibiotics like amphotericin B target ergosterol to form lethal pores that lead to ion leakage (Source 1.4.1). While these targets offer broad-spectrum potential, their similarity to host cell membranes can lead to significant safety concerns, including nephrotoxicity and neurotoxicity (Source 1.1.2, 1.1.3). Recent drug discovery efforts have shifted toward more specific membrane-associated proteins, such as the BAM complex, to enhance selectivity and overcome resistance (Source 1.2.4).

Other names

Microbial cell membraneBacterial cytoplasmic membraneFungal cell membraneMicrobial plasma membraneBacterial outer membrane

Drugs targeting this complex act by disrupting membrane integrity, forming transmembrane pores, dissipating membrane potential (depolarization), or inhibiting the assembly of essential membrane proteins and lipids (Source 1.1.3, 1.2.1).