Bacterial and cellular proteins and nucleic acids

The term "Bacterial and cellular proteins and nucleic acids" refers to a broad and non-specific collection of biological macromolecules rather than a single, defined therapeutic target. This classification is frequently used to describe the mechanism of action for broad-spectrum antiseptics and disinfectants, such as povidone-iodine and silver nitrate, which exert antimicrobial effects by chemically modifying a wide array of essential cellular components (StatPearls: NBK559254). These agents typically cause rapid microbial death through processes like oxidation, halogenation, or protein precipitation, which disrupt the structural integrity and metabolic functions of the cell (PubChem: CID 24933). For example, povidone-iodine releases free iodine that reacts with the thiol groups of amino acids and the nitrogenous bases of nucleic acids, leading to the inactivation of enzymes and the degradation of genomic material. Similarly, silver ions from silver nitrate bind to bacterial proteins and DNA, interfering with replication and metabolic pathways. Because these chemical reactions are not selective for pathogens, they can also damage host tissues, which generally limits their clinical use to topical applications or environmental disinfection. Due to the lack of specificity, these agents do not typically induce resistance in the same way that targeted antibiotics do, but their therapeutic window is narrow. Consequently, this entry represents a functional category of targets for non-selective chemical agents rather than a specific molecular site for targeted drug therapy.

Other names

Bacterial and host macromoleculesMicrobial proteins and DNA/RNACellular macromolecules

Non-specific oxidative damage, halogenation, and denaturation of proteins and nucleic acids (StatPearls: NBK559254)