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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
12
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pubmed:dateCreated |
1985-5-16
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pubmed:abstractText |
The binding of Tb3+ and other lanthanides to Con A has been studied by sensitized Tb3+ luminescence, by quenching of intrinsic fluorescence and by activity measurements. In all the experimental conditions tested, it was found that holo and apo Con A bind lanthanide ions at a site different from the binding sites of the constitutive metals, Mn2+ and Ca2+. The bound lanthanide did not affect the saccharide binding ability and the hemoagglutinating ability of Con A. The intrinsic fluorescence of Con A is quenched by the binding of Tb3+ and Gd3+. The same quenching is obtained by shifting the pH of Con A from pH 6.5 to 4.5. It is proposed that H+ and Ln3+ completely quench a tryptophan, perhaps the residue 88 or 182.
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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:issn |
0020-711X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
16
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1409-13
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:6530024-Calcium,
pubmed-meshheading:6530024-Concanavalin A,
pubmed-meshheading:6530024-Hemagglutination,
pubmed-meshheading:6530024-Humans,
pubmed-meshheading:6530024-Manganese,
pubmed-meshheading:6530024-Protein Binding,
pubmed-meshheading:6530024-Spectrometry, Fluorescence,
pubmed-meshheading:6530024-Spectrophotometry,
pubmed-meshheading:6530024-Terbium
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pubmed:year |
1984
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pubmed:articleTitle |
A fluorimetric study of the lanthanides binding to concanavalin A.
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pubmed:publicationType |
Journal Article
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