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Ionic liquid-assisted SDS-PAGE to improve human serum protein separation

Tao Zhang1, Qingqing Gai, Feng Qu

  • 1School of Life Science, Beijing Institute of Technology, Beijing, P. R. China.

Electrophoresis
|October 14, 2011
PubMed

Ionic liquid (IL)-assisted sodium dodecyl sulfate polyacrylamide gel electrophoresis (ILs-SDS-PAGE) was presented to improve protein separation. ILs were employed during the preparation process of polyacrylamide gel, then the modified gel was used for commercial protein marker, binary bovine serum albumin/lysozyme (BSA/Lyz) and human serum separation. The influence of ionic liquid concentration, cation alkyl chain length, cation and anion types on proteins separation were investigated. The results showed that ILs played a role in improving some protein separation, and ILs-SDS-PAGE provided higher resolution and separation efficiency than ordinary SDS-PAGE for low and middle relative molecular mass proteins in human serum. In addition, the principle of ILs-SDS-PAGE was discussed and the comparison of ILs-SDS-PAGE with ordinary SDS-PAGE and Native PAGE was made.

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