DNA gyrase/Topo IV-IN-2 (Compound AK19) 是一种抗菌剂,对 E. coli DNA 旋转酶与拓扑异构酶 IV 的IC50分别为 0.783 μM和 7.136 μM。它对革兰氏阳性与革兰氏阴性病原体呈现广谱抗菌活性,并能抑制 B. subtilis 和 MRSA 的生物膜,其对 B. subtilis 和 MRSA 的MIC为 1.9 μM。此化合物适用于研究抗耐药菌药物。
Flumequine-13C3 is intended for use as an internal standard for the quantification of flumequine by GC- or LC-MS. Flumequine (T1060) is a fluoroquinolone antibiotic.1It is active againstS. aureus,S. pyogenes,B. subtilis,E. coli,P. aeruginosa,S. faecalis,andK. pneumoniae (MICs = 1-100 μg/ml). Flumequine (T1060) is also active against field isolates of B. hyodysenteriae (MICs = 6.25-200 μg/ml).2It inhibits DNA gyrase,disrupting supercoiling of bacterial DNA to block transcription and replication.3
Dihydronovobiocin is a coumarin antibiotic and derivative of novobiocin .1It is active against the bacteriaS. aureus,S. haemolyticus,D. pneumoniae,S. typhosa,K. pneumoniae, andP. multocida(MICs = 0.6, 2, 0.6, 10, 10, and 3 μg/ml, respectively).2Dihydronovobiocin inhibits DNA gyrase subunit B with an IC50value of 64.5 nM.3
1.Berger, J., and Batcho, A.D.Coumarin - glycoside antibioticsJ. Chromatogr. Lib.15101-158(1978) 2.Hoeksema, H.Dihydronovobiocin and derivatives thereof3,175,9441-9(1965) 3.Gevi, M., and Domenici, E.A scintillation proximity assay amenable for screening and characterization of DNA gyrase B subunit inhibitorsAnal. Biochem.300(1)34-39(2002)