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Improvement of the solubilization of proteins in two‐dimensional electrophoresis with immobilized pH gradients

Improvement of the solubilization of proteins in two‐dimensional electrophoresis with immobilized... Membrane and nuclear proteins of poor solubility have been separated by high resolution two‐dimensional (2‐D) gel electrophoresis. Isoelectric focusing with immobilized pH gradients leads to severe quantitative losses of proteins in the resulting 2‐D map, although the resolution is usually high. Protein solubility could be improved by using denaturing solutions containing various detergents and chaotropes. Best results were obtained with a denaturing solution containing urea, thiourea, and detergents (both nonionic and zwitterionic). The usefulness of thiourea‐containing denaturing mixtures is shown for microsomal and nuclear proteins as well as for tubulin, a protein highly prone to aggregation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Electrophoresis Wiley

Improvement of the solubilization of proteins in two‐dimensional electrophoresis with immobilized pH gradients

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References (52)

Publisher
Wiley
Copyright
"Copyright © 1997 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
0173-0835
eISSN
1522-2683
DOI
10.1002/elps.1150180303
pmid
9150907
Publisher site
See Article on Publisher Site

Abstract

Membrane and nuclear proteins of poor solubility have been separated by high resolution two‐dimensional (2‐D) gel electrophoresis. Isoelectric focusing with immobilized pH gradients leads to severe quantitative losses of proteins in the resulting 2‐D map, although the resolution is usually high. Protein solubility could be improved by using denaturing solutions containing various detergents and chaotropes. Best results were obtained with a denaturing solution containing urea, thiourea, and detergents (both nonionic and zwitterionic). The usefulness of thiourea‐containing denaturing mixtures is shown for microsomal and nuclear proteins as well as for tubulin, a protein highly prone to aggregation.

Journal

ElectrophoresisWiley

Published: Jan 1, 1997

Keywords: ; ; ; ;

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