Effect of DNA gyrase inhibitors pefloxacin, five other quinolones, novobiocin, and clorobiocin on Escherichia coli topoisomerase I.

Article Details

Citation

Tabary X, Moreau N, Dureuil C, Le Goffic F

Effect of DNA gyrase inhibitors pefloxacin, five other quinolones, novobiocin, and clorobiocin on Escherichia coli topoisomerase I.

Antimicrob Agents Chemother. 1987 Dec;31(12):1925-8.

PubMed ID
2830840 [ View in PubMed
]
Abstract

Two coumarins, inhibitors of the B subunit of DNA gyrase, and six quinolones, inhibitors of the A subunit, were tested against Escherichia coli topoisomerase I-catalyzed DNA relaxation. Coumarins had no effect, whereas quinolones were inhibitors of the enzyme. This inhibition was compared with that of DNA gyrase and calf thymus topoisomerase I. The 50% inhibitory concentrations for E. coli topoisomerase I were about one order of magnitude higher than the corresponding values for E. coli DNA gyrase but were far lower than the known values for calf thymus topoisomerase I. There was a good relationship between inhibition of the two prokaryotic topoisomerases and MICs for E. coli, and the quinolones could be ranked in the same order in the three cases.

DrugBank Data that Cites this Article

Drug Targets
DrugTargetKindOrganismPharmacological ActionActions
NovobiocinDNA topoisomerase 1ProteinStaphylococcus aureus
Unknown
Inhibitor
Details
PefloxacinDNA topoisomerase 1ProteinStaphylococcus aureus
Unknown
Inhibitor
Details