(A) The Triton X‐114‐resistant and soluble regions of the lysosomalmembrane were subjected to centrifugation through a continuous (10-80%) sucrose density gradient, SDS-PAGE and immunoblot for LAMP‐2A. The molecular weight range of each fraction is as follows: fraction 1 (100 kDa); fraction 2 (100-200 kDa); fraction 3 (200-400 kDa); fraction 4 (400-600 kDa); fraction 5 (>600 kDa). 