Reference: Kennedy J and Yi EC (2008) Use of gas-phase fractionation to increase protein identifications: application to the peroxisome. Methods Mol Biol 432:217-28

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Abstract


Gas-phase fractionation (GPF), defined as iterative mass spectrometric interrogations of a sample over multiple smaller mass-to-charge (m/z) ranges, enables the ions selected for collision-induced dissociation to come from a greater number of unique peptides compared to the ions selected from the wide mass range scan in automated liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. GPF is described as a means to achieve higher proteome coverage than multiple LC-MS/MS analyses of unfractionated complex peptide mixtures. It is applied to organellar proteomics through analysis of yeast peroxisomal proteins obtained from a discontinuous Nycodenz gradient fraction known to be enriched with yeast peroxisomal membrane proteins.

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Journal Article
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Kennedy J, Yi EC
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