TABLE 3.
Inhibitory activities of OFX and MXF against gyrase complexes reconstituted with WT H37Rv, the FQs clinical strain, and the gyrA Ala74Ser variant
| Strain | Amino acid change in DNA gyrasea |
MIC (μg/ml) |
IC50 (μg/ml) |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
gyrA |
gyrB | OFX | MXF | OFX | MXF | |||||
| E21Q | S95T | G668D | A74S | Other | ||||||
| WT H37Rv | ND | ND | ND | ND | ND | ND | 0.5 | 0.25 | 1.92 | 0.98 |
| FQs clinical strain | + | + | + | ND | ND | ND | 0.5 | 0.25 | 3.30 | 1.62 |
| Clinical strain harboring the Ala74Ser mutation in gyrA | + | + | + | + | ND | ND | 8.0 | 4.0 | 15.56 | 14.37 |
+, Detected; ND, not detected.