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Quantification of the catalytic performance of C1-cellulose-specific lytic polysaccharide monooxygenases
Ist Teil von
Applied microbiology and biotechnology, 2018-02, Vol.102 (3), p.1281-1295
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2018
Quelle
MEDLINE
Beschreibungen/Notizen
Lytic polysaccharide monooxygenases (LPMOs) have recently been shown to significantly enhance the degradation of recalcitrant polysaccharides and are of interest for the production of biochemicals and bioethanol from plant biomass. The copper-containing LPMOs utilize electrons, provided by reducing agents, to oxidatively cleave polysaccharides. Here, we report the development of a β-glucosidase-assisted method to quantify the release of C1-oxidized gluco-oligosaccharides from cellulose by two C1-oxidizing LPMOs from
Myceliophthora thermophila
C1. Based on this quantification method, we demonstrate that the catalytic performance of both
Mt
LPMOs is strongly dependent on pH and temperature. The obtained results indicate that the catalytic performance of LPMOs depends on the interaction of multiple factors, which are affected by both pH and temperature.