Multiple cellular macromolecules in microorganisms

Multiple cellular macromolecules in microorganisms is a collective term used in pharmacology to describe the diverse array of essential biological components—including proteins, lipids, and nucleic acids—that are simultaneously affected by broad-spectrum antimicrobial agents (DrugBank, DB09155). Unlike targeted therapies that inhibit a specific enzyme or receptor, agents acting on these macromolecules typically cause widespread damage through chemically reactive processes such as oxidation, alkylation, or denaturation (StatPearls, NBK507811). This approach is characteristic of antiseptics, disinfectants, and sterilants like povidone-iodine, hydrogen peroxide, and glutaraldehyde (CDC, 2008). By disrupting the structural and functional integrity of the pathogen at multiple sites, these agents provide rapid microbicidal activity and are highly resistant to the development of microbial escape mutants. However, because these interactions lack high molecular selectivity, these substances are generally restricted to topical or environmental use to prevent damage to host tissues (PubMed, 27261896). They remain a cornerstone of infection control, surgical prophylaxis, and wound management by providing a broad-spectrum barrier against bacteria, fungi, and viruses.

Other names

Microbial macromoleculesNon-specific microbial targetsBacterial macromoleculesFungal macromoleculesViral macromolecules

Drugs targeting these macromolecules exert their effects through non-specific chemical reactions, including the oxidation of thiol groups in proteins, the alkylation of functional groups (amino, carboxyl, and hydroxyl) in nucleic acids and proteins, and the physical disruption of the lipid bilayer in cell membranes (DrugBank, 2024; StatPearls, 2023).