Hydrolysis of cellulose and cellooligosaccharides catalyzed by cellobiohydrolase II studied by proton NMR and HPLC

A. Teleman, A. Valkeajarvi, Anu Koivula, Laura Ruohonen, Torbjörn Drakenberg

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    1 Citation (Scopus)

    Abstract

    Proton NMR spectroscopy and HPLC have been used to investigate the hydrolysis of cellooligosaccharides and cellulose by cellobiohydrolase II from Trichoderma reesei. The cleavage pattern for the substrates cellotriose to cellohexaose has been determined. The catalytic rates were higher for the natural substrates (3.6-300 min-1) than the rates earlier reported for chromophoric cellooligosaccharide derivatives (0.821 min-1). The cellulose hydrolysis is slow compared to the hydrolysis of the soluble cellooligosaccharides. The cellotriose hydrolysis is inhibited by glucose and the inhibition is non-competitive. Cellobiohydrolase II retains maximal activity in a broad pH range, 2.5-6.5.

    Original languageEnglish
    Title of host publicationCellulose and Cellulose Derivatives
    Subtitle of host publicationCellucon '93 Proceedings: Physico-Chemical Aspects and Industrial Applications
    PublisherWoodhead Publishing
    Pages37-42
    ISBN (Print)978-1-85573-212-4
    DOIs
    Publication statusPublished - 1 Jan 1998
    MoE publication typeA4 Article in a conference publication

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