Biochemistry of the oxidation of lignin by Phanerochaete chrysosporium.
Identifieur interne : 001068 ( Main/Exploration ); précédent : 001067; suivant : 001069Biochemistry of the oxidation of lignin by Phanerochaete chrysosporium.
Auteurs : T K Kirk [États-Unis] ; M. Tien ; B D FaisonSource :
- Biotechnology advances [ 0734-9750 ] ; 1984.
Abstract
The objective of this research was to identify the biochemical agents responsible for the oxidative degradation of lignin by the white-rot fungus Phanerochaete chrysosporium. We examined the hypothesis that activated oxygen species are involved, and we also sought the agent in ligninolytic cultures responsible for a specific oxidative degradative reaction in substructure model compounds. Results of studies of the production of activated oxygen species by cultures, of the effect of their removal on ligninolytic activity, and of their action on substructure model compounds support a role for hydrogen peroxide (H(2)O(2)) and possibly superoxide (O(2)(*)(-)) in lignin degradation. Involvement of hydroxyl radical (*OH) or singlet oxygen (1O(2)) is not supported by our data. The actual biochemical agent responsible for one important oxidative C-C bond cleavage reaction in non-phenolic lignin substructure model compounds, and in lignin itself, was found to be an enzyme. The enzyme is extracellular, has a molecular weight of 42,000 daltons, is azide-sensitive, and requires H(2)O(2) for activity.
DOI: 10.1016/0734-9750(84)90004-1
PubMed: 14545695
Affiliations:
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Tien</name></author><author><name sortKey="Faison, B D" sort="Faison, B D" uniqKey="Faison B" first="B D" last="Faison">B D Faison</name></author></analytic><series><title level="j">Biotechnology advances</title><idno type="ISSN">0734-9750</idno><imprint><date when="1984" type="published">1984</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The objective of this research was to identify the biochemical agents responsible for the oxidative degradation of lignin by the white-rot fungus Phanerochaete chrysosporium. We examined the hypothesis that activated oxygen species are involved, and we also sought the agent in ligninolytic cultures responsible for a specific oxidative degradative reaction in substructure model compounds. Results of studies of the production of activated oxygen species by cultures, of the effect of their removal on ligninolytic activity, and of their action on substructure model compounds support a role for hydrogen peroxide (H(2)O(2)) and possibly superoxide (O(2)(*)(-)) in lignin degradation. Involvement of hydroxyl radical (*OH) or singlet oxygen (1O(2)) is not supported by our data. The actual biochemical agent responsible for one important oxidative C-C bond cleavage reaction in non-phenolic lignin substructure model compounds, and in lignin itself, was found to be an enzyme. The enzyme is extracellular, has a molecular weight of 42,000 daltons, is azide-sensitive, and requires H(2)O(2) for activity.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">14545695</PMID><DateCompleted><Year>2003</Year><Month>12</Month><Day>02</Day></DateCompleted><DateRevised><Year>2019</Year><Month>11</Month><Day>08</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0734-9750</ISSN><JournalIssue CitedMedium="Print"><Volume>2</Volume><Issue>2</Issue><PubDate><Year>1984</Year></PubDate></JournalIssue><Title>Biotechnology advances</Title><ISOAbbreviation>Biotechnol Adv</ISOAbbreviation></Journal><ArticleTitle>Biochemistry of the oxidation of lignin by Phanerochaete chrysosporium.</ArticleTitle><Pagination><MedlinePgn>183-99</MedlinePgn></Pagination><Abstract><AbstractText>The objective of this research was to identify the biochemical agents responsible for the oxidative degradation of lignin by the white-rot fungus Phanerochaete chrysosporium. We examined the hypothesis that activated oxygen species are involved, and we also sought the agent in ligninolytic cultures responsible for a specific oxidative degradative reaction in substructure model compounds. Results of studies of the production of activated oxygen species by cultures, of the effect of their removal on ligninolytic activity, and of their action on substructure model compounds support a role for hydrogen peroxide (H(2)O(2)) and possibly superoxide (O(2)(*)(-)) in lignin degradation. Involvement of hydroxyl radical (*OH) or singlet oxygen (1O(2)) is not supported by our data. The actual biochemical agent responsible for one important oxidative C-C bond cleavage reaction in non-phenolic lignin substructure model compounds, and in lignin itself, was found to be an enzyme. 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Tien</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Kirk, T K" sort="Kirk, T K" uniqKey="Kirk T" first="T K" last="Kirk">T K Kirk</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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