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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
4
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pubmed:dateCreated |
1983-3-24
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pubmed:abstractText |
The reoxidation of reduced cytochrome c1 by potassium ferricyanide follows pseudo-first order kinetics with k = 4 x 10(4) M-1 s-1. However, the reoxidation of this cytochrome in two-electron reduced Complex III does not follow any simple rate law although the overall rate of reaction is essentially unchanged. The observed kinetics can be well fitted with a model in which ferricyanide reacts exclusively with cytochrome c1 together with very rapid electron transfer from the reduced iron-sulfur center to cytochrome c1. Neither removal of coenzyme Q from the complex nor prior incubation with antimycin A had any effect on the observed kinetics of reoxidation.
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pubmed:grant |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0021-9258
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
25
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pubmed:volume |
258
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2122-5
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:6296131-Chemistry, Physical,
pubmed-meshheading:6296131-Cytochrome c Group,
pubmed-meshheading:6296131-Cytochromes c1,
pubmed-meshheading:6296131-Electron Transport,
pubmed-meshheading:6296131-Ferricyanides,
pubmed-meshheading:6296131-Kinetics,
pubmed-meshheading:6296131-Mitochondria,
pubmed-meshheading:6296131-Oxidation-Reduction,
pubmed-meshheading:6296131-Physicochemical Phenomena,
pubmed-meshheading:6296131-Ubiquinone,
pubmed-meshheading:6296131-Yeasts
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pubmed:year |
1983
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pubmed:articleTitle |
The oxidation of yeast Complex III. Evidence for a very rapid electron equilibration between cytochrome c1 and the iron-sulfur center.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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