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  • Title: Shotgun proteomics: a qualitative approach applying isoelectric focusing on immobilized pH gradient and LC-MS/MS.
    Author: Geiser L, Vaezzadeh AR, Deshusses JM, Hochstrasser DF.
    Journal: Methods Mol Biol; 2011; 681():449-58. PubMed ID: 20978982.
    Abstract:
    Shotgun proteomics is a rapid and near universal strategy to identify proteins in complex protein mixtures. After protein digestion, the resulting peptide mixture is submitted to two orthogonal techniques: peptides are first separated according to their isoelectric point (pI) by isoelectric focusing (IEF) on immobilized pH gradient (IPG); after peptide extraction, they are then separated in the second dimension according to their hydrophobic properties by reverse phase liquid chromatography (RPLC). Finally, they are detected by tandem mass spectrometry (MS/MS) and proteins are matched by means of bioinformatics software.
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