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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1983-3-11
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pubmed:abstractText |
Equilenin, a naturally fluorescent steroid, has high binding affinity for human sex steroid-binding protein (SBP). At 4 degrees C the equilibrium association constant is approximately 6 X 10(7) M-1. The fluorescence excitation and emission spectra of the steroid-protein complex indicate that both hydrophobic interactions and hydrogen bonding of the 3'-hydroxyl group of the estrogen are important in its binding to the protein. Equilenin has a substantially different 3-dimensional spatial configuration compared with the normally bound androgens, and yet exhibits very tight binding to SBP. This suggests that SBP undergoes a conformational change to accomodate equilenin.
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pubmed:grant | |
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 |
Nov
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pubmed:issn |
0014-5793
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
29
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pubmed:volume |
149
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
240-4
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:6891343-17-Ketosteroids,
pubmed-meshheading:6891343-Equilenin,
pubmed-meshheading:6891343-Female,
pubmed-meshheading:6891343-Humans,
pubmed-meshheading:6891343-Mathematics,
pubmed-meshheading:6891343-Pregnancy,
pubmed-meshheading:6891343-Sex Hormone-Binding Globulin,
pubmed-meshheading:6891343-Spectrometry, Fluorescence
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pubmed:year |
1982
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pubmed:articleTitle |
Equilenin: a specific fluorescent probe for steroid-protein interactions in sex steroid-binding protein.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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