4.5 Article

Application of capillary electrophoretic chips in protein profiling of plant extracts for identification of genetic modifications of maize

Journal

ELECTROPHORESIS
Volume 34, Issue 18, Pages 2740-2753

Publisher

WILEY
DOI: 10.1002/elps.201300103

Keywords

CGE; CE chip; Genetically modified organisms; Maize; Protein profiling

Funding

  1. National Science Centre in Poland [N N204 014938]

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In this study, the chip gel electrophoresis with LIF detection was applied in protein profiling of fractionated and total extracts of maize standards. The sensitivity of such determinations can be enhanced by lyophilization of extracts or employing filtering and preconcentration with cutoff filters. Combinatorial peptide ligand library applied for sample processing prior to the electrophoretic analysis was, especially, an effective pretreatment step in the determination of low-abundance proteins. Several repeatable differences were observed for protein profiles between maize standards not containing the genetically modified organisms (GMOs) and those containing GMO, which can be potentially employed for identification of GMO in maize samples and foods of maize origin.

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