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Predicate | Object |
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rdf:type | |
pubmed:issue |
5395
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pubmed:dateCreated |
1998-12-28
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pubmed:abstractText |
Enzymatic turnovers of single cholesterol oxidase molecules were observed in real time by monitoring the emission from the enzyme's fluorescent active site, flavin adenine dinucleotide (FAD). Statistical analyses of single-molecule trajectories revealed a significant and slow fluctuation in the rate of cholesterol oxidation by FAD. The static disorder and dynamic disorder of reaction rates, which are essentially indistinguishable in ensemble-averaged experiments, were determined separately by the real-time single-molecule approach. A molecular memory phenomenon, in which an enzymatic turnover was not independent of its previous turnovers because of a slow fluctuation of protein conformation, was evidenced by spontaneous spectral fluctuation of FAD.
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pubmed:commentsCorrections | |
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 |
Dec
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pubmed:issn |
0036-8075
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
4
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pubmed:volume |
282
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1877-82
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pubmed:dateRevised |
2007-3-19
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pubmed:meshHeading |
pubmed-meshheading:9836635-Binding Sites,
pubmed-meshheading:9836635-Brevibacterium,
pubmed-meshheading:9836635-Cholesterol,
pubmed-meshheading:9836635-Cholesterol Oxidase,
pubmed-meshheading:9836635-Flavin-Adenine Dinucleotide,
pubmed-meshheading:9836635-Kinetics,
pubmed-meshheading:9836635-Microscopy, Fluorescence,
pubmed-meshheading:9836635-Oxidation-Reduction,
pubmed-meshheading:9836635-Probability,
pubmed-meshheading:9836635-Spectrometry, Fluorescence,
pubmed-meshheading:9836635-Stochastic Processes
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pubmed:year |
1998
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pubmed:articleTitle |
Single-molecule enzymatic dynamics.
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pubmed:affiliation |
Pacific Northwest National Laboratory, William R. Wiley Environmental Molecular Sciences Laboratory, Richland, WA 99352, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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