(e,f) Association of LRRK2 and RNase A (e) or LRRK2 and GAPDH (f) with PI-treated rat liver lysosomes incubated with increasing concentrations of GAPDH (e) or RNase A (f) or ovalbumin (Ov). Left: representative immunoblots. Right: protein association expressed as a percentage of the value when incubated with lysosomes alone (n = 5 or 6 independent experiments). Inp: RNase A (0.4 μg), LRRK2 (0.04 μg) or GAPDH (1 μg). 