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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1979-8-16
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pubmed:abstractText |
1. The reaction of the electron acceptors in Rhus vernicifera laccase (monophenol, dihydroxyphenylalanine:oxygen oxidoreductase, EC 1.14.18.1) have been studied with stopped-flow and rapid-freeze EPR techniques. The studies have been directed mainly towards elucidation of the role of the type 2Cu2+ as a possible pH-sensitve regulator of electron transfer. 2. Anaerobic reduction experiments with Rhus laccase indicate that the type 1 and 2 sites contribute one electron each to the reduction of the two-electron-accepting type 3 site. There is also evidence that the reduction of the type 1 Cu2+ triggers the reduction of the type 2 Cu2+. 3. Only at pH values at which the reduction of the two-electron acceptor is limited by a slow intramolecular reaction can an OH- be displaced from the type 2 Cu2+ by the inhibitor F-. 4. A model describing the role of the electron-accepting sites in catalysis is formulated.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0006-3002
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
10
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pubmed:volume |
568
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
145-56
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pubmed:dateRevised |
2001-11-28
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pubmed:meshHeading |
pubmed-meshheading:221027-Anaerobiosis,
pubmed-meshheading:221027-Catechol Oxidase,
pubmed-meshheading:221027-Electron Spin Resonance Spectroscopy,
pubmed-meshheading:221027-Electron Transport,
pubmed-meshheading:221027-Kinetics,
pubmed-meshheading:221027-Plants, Toxic,
pubmed-meshheading:221027-Toxicodendron
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pubmed:year |
1979
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pubmed:articleTitle |
The mechanism of electron transfer in laccase-catalysed reactions.
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pubmed:publicationType |
Journal Article
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