targeted_by_antibiotic bleomycin nitrofurantoin targeted_by_antibiotic bleomycinic acid bleomycin A2 bleomycin B2 nucleic acid targeted by antibiotic deoxyribonucleic acid DNA Antibiotics can target DNA to cause strand breaks or prevent transcription. The activity of these antibiotics can be context dependent: some antibiotics are converted to an active form only in certain species, while others target DNA as it is being transcribed. antibiotic_resistance ARO:3000738