Bacterial cell membrane lipid (null)

Bacterial cell membrane lipids are the principal structural and functional constituents of the bacterial cytoplasmic membrane bilayer. The dominant lipid types are phospholipids—including anionic and zwitterionic forms—and glycolipids, with their composition strongly influencing membrane fluidity, charge, and protein interactions. These lipids are not only barriers separating the intracellular environment from the extracellular space but also play central roles in regulating stress responses, protein localization, cell signaling, and energy metabolism. Lipid domains within these membranes can serve as scaffolds for enzymes, transporters, and signaling proteins, and their composition and organization may affect susceptibility to membrane-acting antibiotics such as daptomycin. Alterations in membrane lipid composition are linked to drug resistance and adaptation during infection, making cell membrane lipids an important target class for antimicrobial drug development. Safety challenges stem from the need for drugs to distinguish between host and pathogen membrane lipids, as well as the ability of bacteria to evolve resistance through changes in lipid biosynthesis and composition.

Other names

Membrane lipidPhospholipidBacterial phospholipidBacterial membrane lipidAnionic phospholipid (e.g., phosphatidylglycerol, cardiolipin)Zwitterionic phospholipid (e.g., phosphatidylethanolamine)Glycolipid

Disruption of membrane integrity (lipopeptide and peptide antibiotics); Binding and destabilization of lipid bilayer domains; Inhibition of membrane protein assembly/function.