Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-5-27
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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-3002
pubmed:author
pubmed:copyrightInfo
Copyright 1998 Elsevier Science B.V.
pubmed:issnType
Print
pubmed:day
14
pubmed:volume
1364
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
55-62
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
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.
pubmed:affiliation
School of Biological and Medical Sciences, University of St. Andrews, St. Andrews, Fife, Scotland, KY16 9AL, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't