confers_resistance_to_antibiotic confers_resistance_to_antibiotic metronidazole nimB antibiotic_resistance nimB nimB is a nitroimidazole reductase mainly found in Bacteroides fragilis that is associated with the deactivation of nitroimidazole antibiotics such as metronidazole. Minimum inhibitory concentrations observed in isolates vary greatly depending on species, strain, and nitroimidazole treatment. ARO:3004655 nitroimidazole reductase