Update based on original article by Lello Zolla, Encyclopedia of Analytical Chemistry, © 2000, John Wiley & Sons Ltd. Tel.:+39 0761 357 100; fax: +39 0761 357 630. E-mail address: email@example.com
Chromatography of Membrane Proteins and Lipoproteins
Peptides and Proteins
Published Online: 15 SEP 2011
Copyright © 2000 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Analytical Chemistry
How to Cite
Zolla, L. and D'Alessandro, A. 2011. Chromatography of Membrane Proteins and Lipoproteins. Encyclopedia of Analytical Chemistry. .
- Published Online: 15 SEP 2011
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The available methods for the separation of membrane proteins and lipoproteins are sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS/PAGE), followed by immunoblotting, isoelectric focusing (IEF), and capillary electrophoresis (CE), along with the recently introduced gel-based native techniques (blue native (BN) and clear native (CN)), and high-performance liquid chromatography (HPLC). In this article, it is shown that HPLC techniques, given their wide versatility, relative ease of use, and high resolution, may be considered the most valuable tool for the characterization of virtually any hydrophobic protein. Application examples are described, and comparisons with other methods are discussed. Moreover, HPLC is not a destructive technique, and therefore, proteins, once separated, are available for further analytical investigations. Among these techniques, quantitative and qualitative analyses of the separated fractions can be obtained through other biophysical approaches, such as crystallography or structural spectroscopy. Most of these approaches require preliminary protein purification (90% or higher), which could be rapidly obtained through preliminary HPLC.