Fig. 5.
Dependence of the normalized charge after 100 μM ATP concentration jumps in the presence of 10 μM free Ca2+ on inhibitor concentration: TG (●), CPA (○), DBHQ (▲), and TITU (△). In each series, the charges are normalized with respect to the maximum charge observed in the absence of the corresponding inhibitor. The solid curves were obtained by fitting with a sigmoid function the normalized charge.