Figure 6.

The NaChBac LESWAD mutant is sensitive to Ca²⁺ blockade. (A) Currents recorded at 0 mV in varying [Ca²⁺]_o with Na⁺ substitution. (B) Averaged I-V relations of the LESWAD mutant in 10 μM, 1 mM, 10 mM, and 105 mM [Ca²⁺]_o (±SEM, n = 6). Note that the current density, but not E_rev, changed with increasing [Ca²⁺]_o.