Desalting of peptides and protein mixtures by RP-HPLC techniques

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    Abstract

    The RP-HPLC technique can be used to a??desalta?? peptide or protein samples derived from extraction procedures, from chemical reactions such as reductive alkylation in the presence of urea or guanidine hydrochloride, citraconylation, iodination, or cyanogen bromide cleavage, or recovered from other chromatographic separation. The peptide or protein solution is injected onto a small RP-HPLC column. An aqueous buffer is used to elute the salts while the peptides or proteins are concentrated at the top of the column. After elution of the salts, monitored by UV detection, the peptides or proteins are eluted with H2O-acetonitrile or H2O-isopropanol mobile phases.
    Original languageEnglish
    Pages (from-to)1 - 6
    Number of pages6
    JournalCold Spring Harbor Protocols
    Volume5
    DOIs
    Publication statusPublished - 2006

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