TABLE 5

Dose-response curves properties for BeKm-1-induced blockade at −70 mV (see Fig. 4, right)

Ins is the fractional amount of toxin-insensitive ERG current, N is the number of experiments (Kd values in parenthesis derive from on-kinetics experiments).

Ins KdN
nM
Human
ERG1
ERG2 0.025 7.7 ± 0.6 8
ERG3 0.1 77 ± 16 5
Rat 0.06 11.5 ± 1.1 6
ERG1 0.12 19 ± 1.6 6
ERG2 0 4.2 ± 0.5 (1.51 ± 0.12) 5
ERG3 0.25 747 ± 58 6