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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1988-3-2
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pubmed:abstractText |
Shifts of the steady state of cytochromes a, a3 and c at high pO2 values are cited as evidence of the low O2 affinity of cytochrome oxidase in vivo [(1971) Brain Res. 108, 143-154; (1985) Adv. Exp. Med. Biol. 191, 833-842; (1987) in: Int. Soc. Oxygen Transp. Tissue, Sapporo, p. 84]. Highly aerobic, small diploid yeast cells show less than 0.44% change of steady state in the interval prior to an abrupt reduction of cytochrome c. Thus, 'pre-reduction' seems falsified as a physiological response of metabolizing yeast cells that are free of hemoglobin, do not aggregate and maintain a steady state. Pre-reduction may be due to spectroscopic interference, for example hemoglobin deoxygenation, to oxygen gradients in aggregated cells and tissues or to non-steady states of substrate and metabolic controls, as contrasted to an altered cytochrome oxidase oxygen affinity in vivo.
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pubmed:grant | |
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 |
Jan
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pubmed:issn |
0014-5793
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
4
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pubmed:volume |
226
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
343-6
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2828107-Aerobiosis,
pubmed-meshheading:2828107-Anaerobiosis,
pubmed-meshheading:2828107-Cytochrome c Group,
pubmed-meshheading:2828107-Kinetics,
pubmed-meshheading:2828107-Oxidation-Reduction,
pubmed-meshheading:2828107-Oxygen,
pubmed-meshheading:2828107-Partial Pressure,
pubmed-meshheading:2828107-Saccharomyces cerevisiae,
pubmed-meshheading:2828107-Spectrophotometry
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pubmed:year |
1988
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pubmed:articleTitle |
Early reduction of cytochrome c in hypoxia.
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pubmed:affiliation |
Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia 19104.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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