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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
1997-1-9
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pubmed:abstractText |
Purified cytochrome c oxidase CO complex from beef heart has been studied by Fourier transform infrared absorbance difference spectroscopy. Photolysis at 10-20 Kelvin results in dissociation of a3FeCO, formation of CuBCO, and perturbation of the a3-heme and CuB complex. The vibrational perturbation spectrum between 900 and 1700 cm-1 contains a wealth of information about the binuclear center. Appearance in infrared photoperturbation difference spectra of virtually all bands previously reported from resonance Raman spectra indicate the importance of polarization along the 4-vinyl:8-formyl axis, which results in the reduction of heme symmetry to C2v. Frequency-shifted bands due to the 8-formyl and 4-vinyl groups of the a3-heme have been identified and quantitated. The frequency shifts have been interpreted as being due to a change in porphyrin polarization with change in spin state of the iron by photodissociation of CO or perturbation of the CuB coordination complex.
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pubmed:grant |
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-1312679,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-1327113,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-1653051,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-1846351,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-1848709,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-195952,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-2157476,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-2168389,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-2176830,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-2834359,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-2838076,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-2854389,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-3000419,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-3020018,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-3022834,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-4351046,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-4375490,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-4518390,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-5644134,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-5758542,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-6264435,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-6276395,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-6297550,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-6305399,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-6954517,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-7651515,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-7652554,
http://linkedlifedata.com/resource/pubmed/commentcorrection/8842240-8083153
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0006-3495
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
71
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1036-47
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:8842240-Animals,
pubmed-meshheading:8842240-Carbon Monoxide,
pubmed-meshheading:8842240-Cattle,
pubmed-meshheading:8842240-Copper,
pubmed-meshheading:8842240-Darkness,
pubmed-meshheading:8842240-Electron Transport Complex IV,
pubmed-meshheading:8842240-Heme,
pubmed-meshheading:8842240-Light,
pubmed-meshheading:8842240-Macromolecular Substances,
pubmed-meshheading:8842240-Mitochondria, Heart,
pubmed-meshheading:8842240-Models, Structural,
pubmed-meshheading:8842240-Photochemistry,
pubmed-meshheading:8842240-Protein Structure, Secondary,
pubmed-meshheading:8842240-Spectroscopy, Fourier Transform Infrared
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pubmed:year |
1996
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pubmed:articleTitle |
Photoperturbation of the heme a3-CuB binuclear center of cytochrome c oxidase CO complex observed by Fourier transform infrared spectroscopy.
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pubmed:affiliation |
Department of Medical Biochemistry, Ohio State University, Columbus 43210, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.
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