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Updated: Jul 5, 2026

Electrophoretic Separation of Proteins
Published on: June 12, 2008
Isolation of organelles and prefractionation of protein extracts using free-flow electrophoresis
Peter J A Weber1, Gerhard Weber1, Christoph Eckerskorn1
1Tecan Munich GmbH, Kirchheim, Germany.
Abstract:
One of the major obstacles in the analysis of proteomes is the extreme complexity of any particular cell or biological fluid. Free-flow electrophoresis (FFE) is a powerful tool for reduction of this complexity, which is a prerequisite for systematic and comprehensive protein analyses. Protocols are provided in this unit for sample fractionation at two different stages: on the protein level by isoelectric focusing FFE fractionation of crude protein mixtures such as whole cell lysates, and on a subcellular level by zone-electrophoretic FFE purification of organelles.
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