DNA and RNA polymerases and global macromolecular synthesis machinery

DNA and RNA polymerases and the global macromolecular synthesis machinery represent a broad category of enzymes and complexes essential for the replication, transcription, and translation of genetic information (NCBI, 2023). DNA polymerases are responsible for synthesizing DNA strands, a process critical for both cellular division and the propagation of DNA viruses (PubChem, 2024). RNA polymerases, including bacterial RNA polymerase and viral RNA-dependent RNA polymerases, catalyze the formation of RNA from a template, while the ribosome serves as the central machinery for protein synthesis (Nature, 2021; NIH, 2022). These components are highly conserved yet possess structural differences between species, which allows for the development of selective inhibitors. Drugs targeting this machinery include a vast array of antibiotics, antivirals, and chemotherapeutic agents that disrupt the life cycle of pathogens or the proliferation of malignant cells (StatPearls, 2023). Because these processes are fundamental to all living organisms, therapeutic challenges often involve achieving selectivity to minimize host toxicity, such as mitochondrial damage or myelosuppression (PubMed, 2021). Resistance development through target mutations is also a significant concern in treating infectious diseases (Nature, 2021).

Other names

Nucleic acid polymerasesProtein synthesis machineryReplication and transcription apparatusMacromolecular synthesis system

Drugs targeting this machinery act by inhibiting the synthesis of nucleic acids or proteins. This is achieved through competitive inhibition of polymerase active sites, induction of premature chain termination during DNA or RNA synthesis, or binding to ribosomal subunits (30S, 50S, 40S, or 60S) to prevent the translation of mRNA into functional proteins (StatPearls, 2023; NIH, 2022).