Table 1. Kinetic parameters for KPC-2 inhibition.
Inhibitor | IC50 (nM) | K iapp (μM) | k 2/K (M–1 s–1) | k off (s–1) | t 1/2 (min) |
VAB | 35 (0.025) a | 8.5 (1.1) | 6.7 × 102 (0.2 × 102) | 0.00016 (1.5 × 10–5) | 72 |
TAN | 37 (0.031) a | 1.3 (0.36) | 1.0 × 104 (0.09 × 104) | 3.4 × 10–10 (5.5 × 10–11) | 3.4 × 107 |
aStandard error of log IC50. VAB: vaborbactam; TAN: taniborbactam.