Bacterial DNA and proteins

Bacterial DNA and proteins serve as the primary molecular targets for the reactive metabolites generated from furazolidone, a synthetic nitrofuran antibiotic used to treat bacterial and protozoal infections. Furazolidone functions as a prodrug that requires intracellular activation by bacterial nitroreductase enzymes, such as NfsA and NfsB (Whiteway et al., 1998). This reductive process converts the nitro group into highly reactive electrophilic intermediates, including hydroxylamine derivatives and nitrenium ions. These reactive species rapidly form covalent adducts with bacterial macromolecules, most notably causing extensive damage to DNA, such as strand breakage and cross-linking, which halts replication and transcription (McCalla, 1979). Additionally, these intermediates non-specifically attack bacterial proteins and enzymes, disrupting essential metabolic pathways like the citric acid cycle and protein synthesis (PubChem CID 3435). This multi-targeted mechanism provides selective toxicity, as the specific nitroreductases required for activation are primarily found in pathogens rather than human cells, although the resulting DNA damage is the primary driver of the drug's bactericidal effect (StatPearls, 2023).

Other names

Bacterial macromoleculesBacterial nucleic acidsBacterial nucleoproteinsBacterial DNA and proteinsBacterial macromolecules after nitroreduction of furazolidone

Reductive activation by bacterial nitroreductases followed by covalent binding to and damage of DNA, RNA, and proteins.