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. 2004 Jul;48(7):2652–2658. doi: 10.1128/AAC.48.7.2652-2658.2004

TABLE 3.

IC50s and Ki values of β-lactamase inhibitors for AmpCD and AmpCR

β-Lactamase Clavulanic acid
Sulbactam
Tazobactam
IC50 (μM) Ki (μM) IC50 (μM) Ki (μM) IC50 (μM) Ki (μM)
AmpCD 19 ± 1 320 ± 30 3.9 ± 0.2 9.2 ± 0.2 1.4 ± 0.1 8.7 ± 2.4
AmpCR 140 ± 20 4,100 ± 1,600 24 ± 4 780 ± 150 25 ± 1 1,100 ± 120