Figure 5.

Differences in steady-state inactivation of Ca_V1.2 isoforms in HEK 293 cells. (A) Representative Ba²⁺ traces (5 mM) after 15 s conditioning pulses elicited at TP of −120, −90, −60, −40, or −20 mV are shown. (B) The mean ensemble of the steady-state inactivation kinetics is shown. The plots are derived from currents normalized to its maximum and fitted with a single Boltzmann function. Data are presented as mean ± SE. The kinetic parameters are listed in Table 2.