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Novel adsorptive polyamine coating for enhanced capillary electrophoresis of basic proteins and peptides
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Surface Biotechnology.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Analytical Chemistry.
2006 (English)In: Journal of chromatography. B, ISSN 1570-0232, E-ISSN 1873-376X, Vol. 838, no 2, 113-121 p.Article in journal (Refereed) Published
Abstract [en]

In capillary electrophoresis (CE), the anionic and hydrophobic nature of the fused-silica capillary surface has long been known to present a problem in protein and peptide analysis. The use of capillary surface coating is one of the approaches to avoid the analyte-wall interactions. In this study, a new polymer, poly-LA 313, has been synthesized, physico-chemical characterized, and applied as polyamine coating for CE separations. The coating process is highly reproducible and provides fast separations of peptides and proteins in a few minutes and with high efficiency. The physically adsorbed polymer gives rise to a durable coating in the range of pH 2-10, in the presence of organic modifiers (acetonitrile and methanol) and with complex biological samples. The efficiency of the new cationic polymer was also tested performing protein and peptide separations with capillary electrophoresis-electrospray ionization-mass spectrometry (CE-ESI-MS).

Place, publisher, year, edition, pages
2006. Vol. 838, no 2, 113-121 p.
Keyword [en]
capillary electrophoresis, polyamine coating, coated capillaries, proteins, peptides
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:uu:diva-150434DOI: 10.1016/j.jchromb.2006.04.018ISI: 000238963400006PubMedID: 16714157OAI: oai:DiVA.org:uu-150434DiVA: diva2:407366
Available from: 2011-03-30 Created: 2011-03-30 Last updated: 2017-12-11Bibliographically approved

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Axén, JakobBergquist, Jonas

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