Table S1.

Data summary table for the single vesicle–vesicle fusion experiments shown in Figs. 1 and 5 and Fig. S1

Experiment	Ca2+-independent fusion events	Ca2+-triggered fusion events	No. of analyzed SV–PM vesicle pairs	Repeats n
CpxWT	70	181	3,571	9
Cpx1–83	79	142	1,988	4
Cpx4M	207	266	3,509	6
No Cpx	229	198	3,856	7
PM vesicle and 2,000 nM Cpx	127	210	2,762	7
PM vesicle and 100 nM Cpx	83	115	1,971	3
Mock		30	1,882	9

For definition of the repeat experiments, see Methods.