Microbial membranes, proteins, and nucleic acids

Microbial membranes, proteins, and nucleic acids represent the primary structural and functional categories targeted by antimicrobial agents to combat infections. The microbial membrane, including the cell wall in bacteria and fungi, maintains cellular integrity and regulates the transport of ions and nutrients; it is targeted by drugs such as daptomycin and polymyxins which disrupt membrane potential or physical structure [StatPearls: Antibiotics]. Microbial proteins, particularly enzymes involved in metabolic pathways and the ribosomal machinery (30S and 50S subunits), are essential for growth and replication, serving as targets for classes like aminoglycosides, tetracyclines, and macrolides [Merck Manual: Overview of Antibacterial Drugs]. Nucleic acids, including DNA and RNA, are the templates for life; fluoroquinolones inhibit DNA gyrase and topoisomerase IV to prevent replication, while rifamycins inhibit RNA polymerase to block transcription [PubMed: PMC4388899]. This collective target profile is fundamental to the mechanism of action of most antibiotics, antifungals, and antivirals used in clinical practice to treat infectious diseases. However, the broad nature of this entry means it is typically subdivided into specific molecular entities for drug development and regulatory purposes [NIH: Antimicrobial Resistance].

Other names

Microbial cell componentsBacterial macromoleculesPathogen structural targetsMicrobial cell wall and membrane

Inhibition of cell wall synthesis, disruption of membrane integrity, inhibition of protein synthesis by binding to 30S or 50S ribosomal subunits, and interference with nucleic acid replication and transcription.