Thiol-ene Monolithic Pepsin Microreactor with a 3D-Printed Interface for Efficient UPLC-MS Peptide Mapping Analyses

Alexander Jönsson, Rasmus R Svejdal, Nanna Bøgelund, Tam T T N Nguyen, Henrik Flindt, Jörg P Kutter, Kasper D Rand, Josiane P Lafleur

    30 Citationer (Scopus)

    Abstract

    To improve the sample handling, and reduce cost and preparation time, of peptide mapping LC-MS workflows in protein analytical research, we here investigate the possibility of replacing conventional enzymatic digestion methods with a polymer microfluidic chip based enzyme reactor. Off-stoichiometric thiol-ene is utilized as both bulk material and as a monolithic stationary phase for immobilization of the proteolytic enzyme pepsin. The digestion efficiency of the, thiol-ene based, immobilized enzyme reactor (IMER) is compared to that of a conventional, agarose packed bed, pepsin IMER column commonly used in LC-MS based protein analyses. The chip IMER is found to rival the conventional column in terms of digestion efficiency at comparable residence time and, using a 3D-printed interface, be directly interfaceable with LC-MS.

    OriginalsprogEngelsk
    TidsskriftAnalytical Chemistry
    Vol/bind89
    Udgave nummer8
    Sider (fra-til)4573-4580
    Antal sider8
    ISSN0003-2700
    DOI
    StatusUdgivet - 18 apr. 2017

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