Bacterial cell membrane and associated metabolic enzymes

The bacterial cell membrane and its associated metabolic enzymes represent a critical multi-component system essential for bacterial viability, growth, and pathogenesis (Epand et al., 2016, Future Medicinal Chemistry). This system includes the phospholipid bilayer, which maintains osmotic pressure, and a diverse array of integral and peripheral proteins such as ATP synthase, penicillin-binding proteins (PBPs), and various efflux pumps (Silver, 2011, Clinical Microbiology Reviews). In bacteria, the cytoplasmic membrane is the site of oxidative phosphorylation and the synthesis of cell wall components like peptidoglycan and lipopolysaccharides (Sarkar et al., 2012, Molecules). Because many of these enzymes and the lipid compositions (e.g., high phosphatidylglycerol content) are distinct from eukaryotic cells, they serve as primary targets for antimicrobial therapy. Drugs targeting this system act through diverse mechanisms, including the disruption of membrane potential (e.g., daptomycin), physical membrane lysis (e.g., polymyxins), or the inhibition of membrane-bound biosynthetic enzymes (e.g., beta-lactams) (Straus & Hancock, 2006, Biochimica et Biophysica Acta). However, the broad nature of this target system means that resistance can emerge through various pathways, including target modification, enzymatic degradation of drugs, or changes in membrane permeability (Munita & Arias, 2016, Microbiology Spectrum).

Other names

Bacterial cytoplasmic membraneBacterial cell envelopeProkaryotic membrane enzymes

Inhibition of cell wall synthesis, disruption of membrane potential, pore formation, and inhibition of oxidative phosphorylation.