Capillary gel electrophoresis: separation of major erythrocyte membrane proteins |
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Authors: | Lin C Cotton F Boutique C Dhermy D Vertongen F Gulbis B |
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Affiliation: | Department of Clinical Chemistry, H?pital Erasme, Université Libre de Bruxelles, Brussels, Belgium. |
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Abstract: | A new separation method of human erythrocyte membrane proteins by sodium dodecyl sulfate capillary gel electrophoresis (SDS-CGE) is described. In this method, a replaceable gel matrix was used. Seven major erythrocyte membrane proteins, alpha-and beta-spectrin, ankyrin 2.1, band 3 (anion-exchanger), 4.1a and b, and 4.2 (pallidin), were separated and identified by SDS-CGE method. High reproducible migration times of these proteins (inter-assay coefficients of variation less than 2%), as well as quantification (inter-assay coefficients of variation less than 11%) were obtained. This new SDS-CGE method may provide important diagnostic evidence for hereditary spherocytosis. It can be a powerful diagnostic tool in place of SDS polyacrylamide gel electrophoresis for erythrocyte membrane protein analysis. |
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