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- W4306989172 abstract "Lytic polysaccharide monooxygenase (LPMO) supports biomass hydrolysis by increasing saccharification efficiency and rate. Recent studies demonstrate that H2O2 rather than O2 is the cosubstrate of the LPMO-catalyzed depolymerization of polysaccharides. Some studies have questioned the physiological relevance of the H2O2-based mechanism for plant cell wall degradation. This study reports the localized and time-resolved determination of LPMO activity on poplar wood cell walls by measuring the H2O2 concentration in their vicinity with a piezo-controlled H2O2 microsensor. The investigated Neurospora crassa LPMO binds to the inner cell wall layer and consumes enzymatically generated H2O2. The results point towards a high catalytic efficiency of LPMO at a low H2O2 concentration that auxiliary oxidoreductases in fungal secretomes can easily generate. Measurements with a glucose microbiosensor additionally demonstrate that LPMO promotes cellobiohydrolase activity on wood cell walls and plays a synergistic role in the fungal extracellular catabolism and in industrial biomass degradation." @default.
- W4306989172 created "2022-10-22" @default.
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- W4306989172 date "2022-10-21" @default.
- W4306989172 modified "2023-10-13" @default.
- W4306989172 title "Investigating lytic polysaccharide monooxygenase-assisted wood cell wall degradation with microsensors" @default.
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- W4306989172 doi "https://doi.org/10.1038/s41467-022-33963-w" @default.
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