Microbial macromolecules

Microbial macromolecules is a broad, collective term encompassing the essential large molecules—such as proteins, nucleic acids, carbohydrates, and lipids—produced by microorganisms including bacteria, viruses, fungi, and protozoa (Madigan et al., 2020 [Brock Biology of Microorganisms]). These molecules serve as the primary targets for antimicrobial therapy, as they are often essential for the pathogen's survival, replication, or virulence while being distinct from human counterparts (Walsh, 2003 [Antibiotics: Actions, Origins, Resistance]).\n\nFor example, bacterial cell wall peptidoglycans and ribosomal subunits are classic targets for antibiotics like beta-lactams and macrolides, respectively (StatPearls, 2023 [Antibiotics]). In drug discovery, targeting these macromolecules allows for selective toxicity, aiming to eliminate the pathogen with minimal impact on the host (NIH, 2022 [Antimicrobial Resistance]). However, the high rate of mutation and horizontal gene transfer in microbes leads to the rapid evolution of these macromolecules, resulting in the global challenge of antimicrobial resistance (Davies & Davies, 2010 [Microbiol Mol Biol Rev]).

Other names

Microbial componentsPathogen-associated molecular patternsPAMPsMicrobial antigensMicrobial targetsPathogen macromolecules

Drugs targeting microbial macromolecules typically act by inhibiting cell wall synthesis, disrupting protein synthesis at the ribosome, or interfering with nucleic acid replication and transcription (Walsh, 2003 [Antibiotics: Actions, Origins, Resistance]).