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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1977-4-25
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pubmed:abstractText |
(1) The EPR spectrum of Center 1 of NADH dehydrogenase in isolated Complex I or submitochondrial particles from beef heart consists of two overlapping nearly axial signals of the same intensity. They are defined as Center 1a (gll = 0.021, gl = 1.938) and Center 1b (gll = 2.021, gl = 1.928). (2) The line shape of the EPR spectrum of the Center 3+4 can be interpreted as an overlap of two rhombic signals of the same intensity. We define Center 3 by the g-values: gz=2.103, gy = 1.93-1.94, gx=1.884, and Center 4 by the values gz=2.04, gy=1.92-1.93, gx=1.863. (3) Direct quantitation of the individuals signals as well as computer stimulation suggests that the amount of the Centers 1a and 1b is only 25% of that of the other individuals centers and FMN. As EPR spectra of beef-heart submitochondrial particles at 10-20 K are nearly identical to those of Complex I, the same relative concentrations of the Fe-S centers are also present in the particles. (4) The signals either observed by us in EPR spectra of Complex I and submitochondrial particles at 4.2 K and high microwave powers can now be explained without assuming more than 5 paramagnetic centers in NADH dehydrogenase.
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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 |
Feb
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pubmed:issn |
0006-3002
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
7
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pubmed:volume |
459
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
300-17
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:189811-Animals,
pubmed-meshheading:189811-Cattle,
pubmed-meshheading:189811-Electron Spin Resonance Spectroscopy,
pubmed-meshheading:189811-Mitochondria, Muscle,
pubmed-meshheading:189811-Myocardium,
pubmed-meshheading:189811-NAD,
pubmed-meshheading:189811-NADH, NADPH Oxidoreductases,
pubmed-meshheading:189811-Protein Binding,
pubmed-meshheading:189811-Protein Conformation,
pubmed-meshheading:189811-Ubiquinone
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pubmed:year |
1977
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pubmed:articleTitle |
EPR signals of NADH: Q oxidoreductase. Shape and intensity.
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pubmed:publicationType |
Journal Article
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