Escherichia coli chromosomal DNA (E. coli DNA)

Escherichia coli chromosomal DNA is the primary genetic material of the bacterium, typically organized as a single, circular double-stranded molecule that encodes all essential functions for survival and pathogenesis (Blattner et al., 1997). It serves as the master template for DNA replication during cell division and for the transcription of messenger RNA, which is subsequently translated into proteins (UniProt). As a therapeutic target, E. coli DNA is susceptible to various antimicrobial agents that disrupt its structural integrity or its ability to be processed by cellular machinery. For example, nitrofurantoin and metronidazole are reduced to reactive intermediates that cause direct oxidative damage and strand breaks (PubChem CID 4485; DrugBank DB00916), while fluoroquinolones stabilize lethal double-strand breaks by trapping DNA gyrase and topoisomerase IV on the DNA (StatPearls, "Fluoroquinolones"). Because the integrity of chromosomal DNA is vital for bacterial persistence, its disruption is a potent mechanism for treating infections such as urinary tract infections, neonatal meningitis, and enteric diseases (NIH, "Escherichia coli Infections").

Other names

Bacterial DNAE. coli genomeChromosomal DNA

Direct DNA damage through strand breakage, alkylation, or cross-linking, and indirect damage via stabilization of topoisomerase-DNA complexes, leading to inhibition of replication and transcription.