Table 1. L-SR junction characterization parameters.

Parameter	Mean ± SD	Notes
lysosome minor axis	(325 ± 65) nm	n = 29
lysosome major axis	(398 ± 91) nm	n = 29
L-SR width	(16 ± 7) nm	n = 41
L-SR overlap	(23 ± 13)%	n = 29
L-SR lateral extension	(262 ± 209) nm	calculated from data above
3D L-SR overlap	(13 ± 15)%	extrapolated from 2D measurements

Mean and standard deviation values of L-SR junction parameters, calculated from data as in Figure 3B–D.