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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1986-9-16
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pubmed:abstractText |
The thermal stability of the hexanucleoside pentaphosphate d(br5CGbr5CGbr5CG) has been studied at two nucleotide concentrations, in the presence of 1 M NaClO4. At low nucleotide concentration (7 X 10(-5) M), circular dichroism experiments show a conformational transition from the Z conformation to another conformation, named X, which is not the B conformation, as the temperature is increased from 0 to 35 degrees C. Between 40 and 65 degrees C, another transition is observed which corresponds to the melting of the X conformation. At higher nucleotide concentration (2 X 10(-3) M), circular dichroism and 31P nuclear magnetic resonance experiments show that at low temperature (br5dC-dG)3 adopts the Z conformation. There are associations between the oligonucleotides which progressively disappear as the temperature increases. In the range 35-60 degrees C a transition from the Z conformation to another conformation is observed. This new conformation is the X conformation detected at low nucleotide concentration.
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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:month |
May
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pubmed:issn |
0300-9084
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
68
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
739-43
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:3089332-Circular Dichroism,
pubmed-meshheading:3089332-Drug Stability,
pubmed-meshheading:3089332-Hot Temperature,
pubmed-meshheading:3089332-Magnetic Resonance Spectroscopy,
pubmed-meshheading:3089332-Nucleic Acid Conformation,
pubmed-meshheading:3089332-Oligodeoxyribonucleotides
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pubmed:year |
1986
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pubmed:articleTitle |
Thermal stability of the Z conformation of the hexanucleoside pentaphosphate d(br5CGbr5CGbr5CG): evidence for a conformational transition before melting.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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