Linked Life Data

2845965

Source:http://linkedlifedata.com/resource/pubmed/id/2845965

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-11-21
pubmed:abstractText
The steady-state kinetics of ubiquinol cytochrome c reductase was investigated in submitochondrial particles using ubiquinol-1 as electron donor in media of increasing viscosities obtained by water-polyethylene glycol mixtures. The minimum association rate constant, kmin = kcat/km, for cytochrome c was strongly viscosity dependent, whereas kmin for ubiquinol-1 was only weakly affected by viscosity. It is concluded that the interaction of cytochrome c with the membranous reductase is largely under diffusion control, whereas the oxidation of ubiquinol by the enzyme is not significantly controlled by diffusion in either the aqueous medium or the membrane. The results are compatible with the presence of a diffusion limited step in cytochrome c but not in ubiquinone in mitochondrial electron transfer.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
155
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1145-53
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Diffusional effects in the steady state kinetics of ubiquinol cytochrome c reductase in bovine heart submitochondrial particles.
pubmed:affiliation
Department of Biology, University of Bologna, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't