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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1998-5-27
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pubmed:abstractText |
The orientation dependence of the EPR signals arising from the azide-nitric oxide complex of cytochrome oxidase was investigated using oriented multilayers of mitochondrial membranes from ox heart. Variations in line shape of the DeltaMS=1 signal of the triplet state were apparent, whilst the DeltaMS=2 transitions between g=4.7 and 3.9 varied in intensity as the angle of the applied magnetic field was varied. These half-field signals were maximal with the field parallel to the membrane plane. A model of the bi-liganded azide-nitric oxide complex has been constructed, in which the nitric oxide is bound to the high-spin haem in a bent configuration, with the Fe-N=O plane at 60-90 degrees to the membrane plane and the azide bound to the copper, distal from the haem. In addition, angular variations of the signals at g'=11 and g' around 3.5, derived from an integer-spin complex, were also observed.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Azides,
http://linkedlifedata.com/resource/pubmed/chemical/Copper,
http://linkedlifedata.com/resource/pubmed/chemical/Electron Transport Complex IV,
http://linkedlifedata.com/resource/pubmed/chemical/Heme,
http://linkedlifedata.com/resource/pubmed/chemical/Iron,
http://linkedlifedata.com/resource/pubmed/chemical/Nitric Oxide
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0006-3002
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pubmed:author | |
pubmed:copyrightInfo |
Copyright 1998 Elsevier Science B.V.
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pubmed:issnType |
Print
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pubmed:day |
14
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pubmed:volume |
1364
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
55-62
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9554953-Animals,
pubmed-meshheading:9554953-Azides,
pubmed-meshheading:9554953-Cattle,
pubmed-meshheading:9554953-Copper,
pubmed-meshheading:9554953-Electron Spin Resonance Spectroscopy,
pubmed-meshheading:9554953-Electron Transport Complex IV,
pubmed-meshheading:9554953-Heme,
pubmed-meshheading:9554953-Iron,
pubmed-meshheading:9554953-Mitochondria, Heart,
pubmed-meshheading:9554953-Nitric Oxide,
pubmed-meshheading:9554953-Ruminants
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pubmed:year |
1998
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pubmed:articleTitle |
Angular dependence of electron paramagnetic resonances of an azide-NO complex of cytochrome c oxidase: orientation of the haem-copper axis in cytochrome aa3 from ox heart.
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pubmed:affiliation |
School of Biological and Medical Sciences, University of St. Andrews, St. Andrews, Fife, Scotland, KY16 9AL, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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