Table 2.

Steady-State Inactivation Currents of Ca_V1.2 Obtained in 5 mM Ba²⁺

Parameters/ Splice Isoform	V1/2inact. (mV)	k	n
1a/8	−30.9 ± 0.7	−7.6 ± 0.6	10
1a/8a	−36.0 ± 0.9a,c	−7.8 ± 0.8	10
1/8	−37.2 ± 0.9b	−7.8 ± 0.8	11
1/8a	−43.1 ± 0.7a,b,c	−8.0 ± 0.7	9

The half-maximal inactivation (V_1/2inact.) was calculated from the normalized currents after a single Boltzmann fit was applied. The slope factor is given as the k-value, and n represents the number of experiments. Data are given as mean ± SE. Significance testing was done by a one-way ANOVA, Bonferroni corrected, ^a/ap < 0.01, ^b/bp < 0.05, ^c/cp <0.0001.