New zwitterionic detergents improve the analysis of membrane proteins by two‐dimensional electrophoresis

Electrophoresis - Tập 19 Số 11 - Trang 1901-1909 - 1998
Mireille Chevallet, Alexandra Poinas, David Rouquié1, Alexandra Fuchs, Sylvie Kieffer, Michel Galinier1, Joël Lunardi, Jérôme Garin, Thierry Rabilloud
1Biochimie et Physiologie Moléculaire des Plantes

Tóm tắt

AbstractSevere quantitative loss of protein is often observed in high‐resolution two‐dimensional electrophoresis of membrane proteins, while the resolution is usually not affected. To improve the solubility of proteins in this technique, we tested denaturing cocktails containing various detergents and chaotropes. Best results were obtained with a denaturing solution containing urea, thiourea, and zwitterionic detergents, synthesized for this purpose. Among the dozen detergents synthesized and tested, amidosulfobetaines with an alkyl tail containing 14–16 carbons proved most efficient, solubilizing previously undetected membrane proteins.

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Electrophoresis

Tập 19 Số 11

1901-1909

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