Fluorescence and energy transfer of tryptophans in Aplysia myoglobin.
The fluorescence decay of tryptophan residues in apo and met Aplysia limacina myoglobin and sperm whale myoglobin were measured in aqueous solution at 10 degrees-15 degrees C. In all species, multiexponential behavior was observed in which the individual components displayed unique frequency-depende...
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ftpubmed:oai:pubmedcentral.nih.gov:1329937 2023-05-15T18:26:42+02:00 Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. Janes, S M Holtom, G Ascenzi, P Brunori, M Hochstrasser, R M 1987-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1329937 http://www.ncbi.nlm.nih.gov/pubmed/3580491 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1329937 http://www.ncbi.nlm.nih.gov/pubmed/3580491 Research Article Text 1987 ftpubmed 2013-08-30T19:19:31Z The fluorescence decay of tryptophan residues in apo and met Aplysia limacina myoglobin and sperm whale myoglobin were measured in aqueous solution at 10 degrees-15 degrees C. In all species, multiexponential behavior was observed in which the individual components displayed unique frequency-dependent emission characteristics. The results suggest that the tryptophan fluorescence in all met samples are quenched by rapid Forster energy transfer to the heme as predicted from the crystal geometry. Fluorescence from the apo protein is similar to that in solutions of free tryptophans. In addition, the fluorescence properties of the reversible thermal denaturation of Aplysia limacina met myoglobin was investigated between 25 degrees and 75 degrees C. Text Sperm whale PubMed Central (PMC) |
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Research Article Janes, S M Holtom, G Ascenzi, P Brunori, M Hochstrasser, R M Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. |
topic_facet |
Research Article |
description |
The fluorescence decay of tryptophan residues in apo and met Aplysia limacina myoglobin and sperm whale myoglobin were measured in aqueous solution at 10 degrees-15 degrees C. In all species, multiexponential behavior was observed in which the individual components displayed unique frequency-dependent emission characteristics. The results suggest that the tryptophan fluorescence in all met samples are quenched by rapid Forster energy transfer to the heme as predicted from the crystal geometry. Fluorescence from the apo protein is similar to that in solutions of free tryptophans. In addition, the fluorescence properties of the reversible thermal denaturation of Aplysia limacina met myoglobin was investigated between 25 degrees and 75 degrees C. |
format |
Text |
author |
Janes, S M Holtom, G Ascenzi, P Brunori, M Hochstrasser, R M |
author_facet |
Janes, S M Holtom, G Ascenzi, P Brunori, M Hochstrasser, R M |
author_sort |
Janes, S M |
title |
Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. |
title_short |
Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. |
title_full |
Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. |
title_fullStr |
Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. |
title_full_unstemmed |
Fluorescence and energy transfer of tryptophans in Aplysia myoglobin. |
title_sort |
fluorescence and energy transfer of tryptophans in aplysia myoglobin. |
publishDate |
1987 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1329937 http://www.ncbi.nlm.nih.gov/pubmed/3580491 |
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Sperm whale |
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Sperm whale |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1329937 http://www.ncbi.nlm.nih.gov/pubmed/3580491 |
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1766208665144000512 |