Lysis in the sucrose-containing Buffer ("Mito-Buffer") is supposed to prevent accidential disrupture of the mitochondria to prevent the leakage of mitochondrial proteins (such as cytochrome c) into the cytosol. Celldeath.de - [Read Gentle lysis of mammalian cells for cytochrome c release assay]
Microtuble/ organelled motility assay using Golgi or ER membranes, 45 uM tubulin, rat liver cytosol, and 20x energy regeneration system. - [Read Microtubule/ organelle Motility Assays]