Table I.

Steady-state activation

Channel	V1/2	k	n
hERG1a	−27.2 ± 0.2	8.59 ± 0.15	4
hERG1b	−26 ± 0.9	10.48 ± 0.8	3
hERG1b + 1–135	−34.84 ± 0.54	8.91 ± 0.47	3
hERG1b + 1–181	−49.48 ± 0.49	8.04 ± 0.35	3
hERG1b + 1–228	−37.09 ± 1.43	10.13 ± 1.31	4
hERG1b + 1–319	−41.69 ± 0.13	7.5 ± 0.14	5
hERG1b + 1–365	−43.88 ± 0.32	8.02 ± 0.3	5

V_1/2, voltage at half-maximal activation; k, slope; n, number of oocytes.