Ca2+-current-voltage relationships in response to 10 ms step-depolarizations. (A') The peak of Ca2+-influx was significantly reduced in endophilin 1-SKO (**p = 0.0024) and 1/3-DKO (***p < 0.0001) when compared to Wt. (Wt n = 30/ N = 20; 1-SKO n = 15/ N = 9; 1/3-DKO n = 39/ N = 20; Non-parametric K-W with post-hoc Dunn's correction). 