Cellobiose oxidase of Phanerochaete chrysosporium enhances crystalline cellulose degradation by cellulases.
Identifieur interne : 000E78 ( Main/Curation ); précédent : 000E77; suivant : 000E79Cellobiose oxidase of Phanerochaete chrysosporium enhances crystalline cellulose degradation by cellulases.
Auteurs : W. Bao ; V. RenganathanSource :
- FEBS letters [ 0014-5793 ] ; 1992.
Descripteurs français
- KwdFr :
- MESH :
- enzymologie : Basidiomycota.
- métabolisme : Carbohydrate dehydrogenases, Cellulose.
- Hydrolyse.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbohydrate Dehydrogenases, Cellulose.
- enzymology : Basidiomycota.
- Hydrolysis.
Abstract
The effect of Phanerochaete chrysosporium cellobiose oxidase (CBO) on microcrystalline cellulose hydrolysis by Trichoderma cellulases was determined. Addition of 10 micrograms.ml-1 CBO to a reaction mixture containing T. viride cellulase increased glucose and cellobiose production by 10% and 48%, respectively. Cellulose weight loss was also enhanced by 19%. At higher concentrations (20-80 micrograms.ml-1), CBO decreased glucose and cellobiose production. Cellulose weight loss at 60 micrograms.ml-1 CBO was 76% compared to control cellulase reactions. This decrease appears to be due to inactivation of cellulase by H2O2 produced via CBO reaction, because addition of catalase enhances sugar production and cellulose weight loss. These findings suggest that at low, perhaps physiologically relevant concentrations, CBO enhances crystalline cellulose degradation by cellulases.
DOI: 10.1016/0014-5793(92)80289-s
PubMed: 1587358
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W. Bao<affiliation><nlm:affiliation>Department of Chemical and Biological Sciences, Oregon Graduate Institute of Science and Technology, Beaverton 97006-1999.</nlm:affiliation>
<wicri:noCountry code="subField">Beaverton 97006-1999</wicri:noCountry>
</affiliation>
Le document en format XML
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<term>Cellulose (metabolism)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Basidiomycota (enzymologie)</term>
<term>Carbohydrate dehydrogenases (métabolisme)</term>
<term>Cellulose (métabolisme)</term>
<term>Hydrolyse (MeSH)</term>
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<front><div type="abstract" xml:lang="en">The effect of Phanerochaete chrysosporium cellobiose oxidase (CBO) on microcrystalline cellulose hydrolysis by Trichoderma cellulases was determined. Addition of 10 micrograms.ml-1 CBO to a reaction mixture containing T. viride cellulase increased glucose and cellobiose production by 10% and 48%, respectively. Cellulose weight loss was also enhanced by 19%. At higher concentrations (20-80 micrograms.ml-1), CBO decreased glucose and cellobiose production. Cellulose weight loss at 60 micrograms.ml-1 CBO was 76% compared to control cellulase reactions. This decrease appears to be due to inactivation of cellulase by H2O2 produced via CBO reaction, because addition of catalase enhances sugar production and cellulose weight loss. These findings suggest that at low, perhaps physiologically relevant concentrations, CBO enhances crystalline cellulose degradation by cellulases.</div>
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<DateRevised><Year>2019</Year>
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<Title>FEBS letters</Title>
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<Abstract><AbstractText>The effect of Phanerochaete chrysosporium cellobiose oxidase (CBO) on microcrystalline cellulose hydrolysis by Trichoderma cellulases was determined. Addition of 10 micrograms.ml-1 CBO to a reaction mixture containing T. viride cellulase increased glucose and cellobiose production by 10% and 48%, respectively. Cellulose weight loss was also enhanced by 19%. At higher concentrations (20-80 micrograms.ml-1), CBO decreased glucose and cellobiose production. Cellulose weight loss at 60 micrograms.ml-1 CBO was 76% compared to control cellulase reactions. This decrease appears to be due to inactivation of cellulase by H2O2 produced via CBO reaction, because addition of catalase enhances sugar production and cellulose weight loss. These findings suggest that at low, perhaps physiologically relevant concentrations, CBO enhances crystalline cellulose degradation by cellulases.</AbstractText>
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