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Curr Protoc Cell Biol. 2005 Jul;Chapter 15:Unit 15.8. doi: 10.1002/0471143030.cb1508s27.

Analysis of protein transport to lysosomes.

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  • 1University of Zurich, Zurich, Switzerland.


Lysosomes are terminal degradative organelles that are found in all higher eukaryotic cells. The biogenesis of lysosomes involves the transport of various acid hydrolases and transmembrane glycoproteins from their site of synthesis in the endoplasmic reticulum through the biosynthetic and endocytic pathways. Protein transport to lysosomes can be studied by a combination of techniques based on the separation of intracellular organelles. Percoll density gradient centrifugation has long been the method of choice for separating lysosomes from other organelles in cell homogenates, and accordingly, this unit describes protocols for obtaining reasonably pure lysosomal fractions from mammalian cells using Percoll density gradient separation.

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