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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
13
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pubmed:dateCreated |
1992-8-17
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pubmed:abstractText |
We have investigated the conformations of the hexadeoxyribonucleotide, L-d(CGCGCG) composed of L-deoxyribose, the mirror image molecule of natural D-deoxyribose. In this paper, we report the synthesis of four L-deoxynucleosides and the L-oligonucleotide-ethidium bromide interactions. The L-deoxyribose synthon 9 was synthesized from L-arabinose with an over all yield of 28.5% via the Barton-McCombie reaction. The L-deoxynucleosides were obtained by a glycosylation of appropriate nucleobase derivatives with the 1-chloro sugar 9. After derivatization to nucleoside phosphoramidites, L-deoxycytidine and L-deoxyguanosine were incorporated into a hexadeoxynucleotide, L-d(CGCGCG) by a solid-phase beta-cyanoethylphosphoramidite method. This L-hexanucleotide was resistant to digestion with nuclease P1. The conformations of L-d(CGCGCG) were an exact mirror image of that of the corresponding natural one as described previously, and the conformations of the L-d(CGCGCG)-ethidium bromide complex were also the mirror images of those of the D-d(CGCGCG)-ethidium bromide complex under both low and high salt conditions. These results suggest that ethidium bromide prefers not a right-handed helical sense, but the base-base stacking geometry of the B-form rather than that of the Z-form. Thus, L-DNA would be a useful tool for studying DNA-drug interactions.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-1068447,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-1651474,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-2018503,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-2173569,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-2374710,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-3822812,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-4509343,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-5069391,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-5416936,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-5888583,
http://linkedlifedata.com/resource/pubmed/commentcorrection/1630904-6547529
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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 |
Jul
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pubmed:issn |
0305-1048
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
11
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pubmed:volume |
20
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3325-32
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading | |
pubmed:year |
1992
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pubmed:articleTitle |
Synthesis and properties of mirror-image DNA.
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pubmed:affiliation |
Osaka University of Pharmaceutical Sciences, Japan.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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