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Oxidative cellulose...
Oxidative cellulose degradation by cellobiose dehydrogenase from Phanerochaete chrysosporium : A model compound study
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Krusa, M. (author)
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- Henriksson, Gunnar (author)
- KTH,Träkemi och massateknologi
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Johansson, G. (author)
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Reitberger, T. (author)
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Lennholm, H. (author)
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(creator_code:org_t)
- 2005
- 2005
- English.
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In: Holzforschung. - 0018-3830 .- 1437-434X. ; 59:3, s. 263-268
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Cellobiose dehydrogenase (CDH) is an extracellular enzyme produced by various wood-degrading fungi. It oxidizes cellobiose to cellobionolactone under reduction of molecular oxygen to hydrogen peroxide, and Fe3+ to Fe2+. These activated agents can thereafter form highly reactive hydroxyl radicals, which depolymerize wood polymers. In this work, cellulose depolymerization by CDH was studied using a model compound, methyl beta-D-glucopyranoside. The formation of glucose, arabinose, gluconic acid, erythrulose and formaldehyde were detected and a mechanism for the reaction is proposed. The biological importance of this enzyme-initiated reaction is discussed.
Keyword
- cellobiose dehydrogenase
- cellulose biodegradation
- hydroxyl radical
- methyl beta-D-glucopyranoside
- white-rot fungus
- sporotrichum-pulverulentum
- quinone oxidoreductase
- degrading enzyme
- oxidase
- delignification
- purification
- cellulases
- mechanism
- lignin
Publication and Content Type
- ref (subject category)
- art (subject category)
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