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Updated: Aug 17, 2026

Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
Published on: April 2, 2018
Postfractionation for enhanced proteomic analyses: routine electrophoretic methods increase the resolution of
R Hussain Butt1, Jens R Coorssen
1Department of Physiology, Hotchkiss Brain Institute, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada.
Abstract:
Here we have addressed common issues of resolution in two-dimensional polyacrylamide gel electrophoresis (2DE) experiments including proteins 'stacked' at pH extremes, unresolved peptides migrating at the front of separation, and areas of the 2D gel obscured by high abundance proteins. Postfractionation, by selective application of well-established electrophoretic separations immediately following standard 2DE, yields markedly improved resolution in these traditional problem areas using no more specialized equipment or techniques than SDS-PAGE itself.
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