Bacterial cell membranes and intracellular proteins

Bacterial cell membranes and intracellular proteins represent a broad and heterogeneous group of therapeutic targets essential for bacterial survival and pathogenesis. The bacterial cell membrane serves as a critical barrier and scaffold for bioenergetic processes, while intracellular proteins include enzymes and complexes involved in DNA replication, RNA transcription, and protein translation (Frontiers in Microbiology, 2018). Drugs targeting the membrane, such as polymyxins and daptomycin, typically act by disrupting lipid bilayers or altering membrane potential, leading to rapid cell death (NIH, 2021). Conversely, drugs targeting intracellular proteins, such as aminoglycosides or fluoroquinolones, interfere with vital biosynthetic pathways or genetic maintenance (PubMed, 2019). Multi-targeted agents, including silver ions, zinc ions, and certain antimicrobial peptides, are known to simultaneously disrupt membrane structures and bind to intracellular proteins (Frontiers in Pharmacology, 2021). This dual mechanism of action is particularly effective against multidrug-resistant pathogens and biofilms (Cambridge.org, 2024). Because this category encompasses a vast array of distinct molecular structures across diverse bacterial species, it is generally considered a collective term for multiple specific antibiotic targets rather than a single pharmacological entity.

Other names

Bacterial cell envelope and cytoplasmBacterial proteome and lipid bilayerBacterial cell surface and internal proteins

Disruption of bacterial membrane integrity leading to cytoplasmic leakage, combined with the inhibition of intracellular biosynthetic pathways such as protein synthesis and nucleic acid replication.