Bacterial membranes and nucleic acids

Bacterial membranes and nucleic acids are essential structural and functional components of prokaryotic cells that serve as primary targets for various classes of antibiotics. The bacterial membrane, including the inner cytoplasmic membrane and the Gram-negative outer membrane, maintains cellular integrity and regulates transport; its disruption by agents like polymyxins or daptomycin leads to cell lysis and death by causing the leakage of essential ions and molecules (Zavascki et al., 2007; Humphries et al., 2013). Nucleic acids, specifically DNA and RNA, are the templates for heredity and protein synthesis within the cell. Antibiotics target these by inhibiting critical enzymes such as DNA gyrase and topoisomerase IV (quinolones) or RNA polymerase (rifamycins) (Aldred et al., 2014; Campbell et al., 2001). Other agents, such as metronidazole, act by causing direct physical damage to the DNA strands under anaerobic conditions. These targets are vital for bacterial survival and pathogenesis, making them central to the treatment of a wide range of infectious diseases. However, because this target encompasses multiple distinct biological structures, therapeutic strategies must be specific to avoid toxicity to host cells or the beneficial microbiome.

Other names

Bacterial cell envelopeBacterial genomeProkaryotic membranesBacterial DNA and RNA

Disruption of bacterial cell membrane integrity, inhibition of DNA replication via topoisomerase interference, and inhibition of RNA synthesis via RNA polymerase binding.