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Updated: Aug 19, 2026

Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient
Published on: September 3, 2014
One-step separation of endocytic organelles, Golgi/trans-Golgi network and plasma membrane by density gradient
1Department of Cell Biology, Center of Anatomy Hannover Medical School, Germany. rli@zellbiologie.mh-hannover.de
Abstract:
Many different methods for the fractionation of subcellular organelles have been reported. However, no protocol for rapid separation of plasma membrane, Golgi/trans-Golgi network (TGN) and endosomes is available to date. Such a method is a prerequisite for a quantitative biochemical analysis of vesicular transport from the Golgi/TGN compartment to plasma membrane and endosomes. Here a density gradient electrophoresis protocol is described that allows the fractionation of these organelles in one step. This protocol requires only low-cost instrumentation available in most biochemical laboratories.
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