Table 3.

Steady-state inactivation and activation of Ca_v1.2 α₁-subunit splice variants

CaV1.2 α1-variant	V1/2, mV		Window Current (I/Imax) Range at Half-maximal Amplitude, mV
	Steady-state inactivation	Activation
e1b+9	−10.7±1.5	8.3±1.7	−3.6 to N/A
n	11	9
e1c+9	−13.9±1.4	−3.2±3.2*	−14.1 to +0.5 = 14.6
n	10	5
e1b+9+9*	−17.9±2.8	−0.1±3.3*	−16.3 to +10.5 = 26.8
n	11	7
e1c+9+9*	−17.7±3.4	−3.5±2.6*	−20.3 to −3.9 = 16.4
n	11	9

Values are means ± SE.

^*P < 0.05 vs. e1b +9. V_1/2, half-inactivation voltage of steady-state inactivation; I/I_max, normalized peak current; N/A, not applicable.