RNA and nucleotide metabolism enzymes

RNA and nucleotide metabolism enzymes encompass a diverse group of catalytic proteins responsible for the biosynthesis, interconversion, and degradation of nucleotides and RNA molecules. These enzymes, including ribonucleotide reductase (RNR), thymidylate synthase (TS), and various RNA polymerases, are critical for maintaining the balanced pools of purines and pyrimidines required for DNA replication and gene expression (Source: NIH, StatPearls). Because rapidly dividing cells, such as malignant cells and pathogens, possess a heightened demand for these building blocks, these enzymes serve as primary targets for antimetabolite chemotherapy and antiviral agents. Drugs targeting this system typically act as competitive inhibitors or fraudulent substrates that disrupt nucleic acid synthesis, leading to cell cycle arrest or viral inhibition (Source: PubChem, PubMed). However, due to the ubiquitous nature of these metabolic processes, therapeutic intervention often carries risks of myelosuppression and gastrointestinal distress (Source: Wikipedia, NIH). This category is broad and includes both de novo synthesis pathways and salvage pathways, making it a cornerstone of pharmacological intervention in oncology and infectious diseases.

Other names

Nucleotide metabolism enzymesRNA processing enzymesNucleic acid metabolism enzymesPurine and pyrimidine metabolism enzymes

Inhibition of de novo or salvage nucleotide synthesis pathways, competitive inhibition of RNA polymerases, and incorporation of nucleotide analogs into nascent RNA/DNA chains leading to chain termination or mutagenesis.