| A new usage of functionalized oligodeoxynucleotide probe for site-specific modification of a guanine base within RNA. | |
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MedLine Citation:
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PMID: 20123727 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Site-specific modification of RNA is of great significance to investigate RNA structure, function and dynamics. Recently, we reported a new method for sequence- and cytosine-selective chemical modification of RNA based on the functional group transfer reaction of the 1-phenyl-2-methylydene-1,3-diketone unit of the 6-thioguanosine base incorporated in the oligodeoxynucleotide probe. In this study, we describe that the functionality transfer rate is greatly enhanced and the selectivity is shifted to the guanine base when the reaction is performed under alkaline conditions. Detailed investigation indicated that the 2-amino group of the enolate form of rG is the reactant of the functionality transfer reaction. As a potential application of this efficient functionality transfer reaction, a pyrene group as a relatively large fluorescent group was successfully transferred to the target guanine base of RNA with a high guanine and site selectivity. This functionality transfer reaction with high efficiency and high site-selectivity would provide a new opportunity as a unique tool for the study of RNA. |
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Authors:
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Kazumitsu Onizuka; Yosuke Taniguchi; Shigeki Sasaki |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-01-31 |
Journal Detail:
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Title: Nucleic acids research Volume: 38 ISSN: 1362-4962 ISO Abbreviation: Nucleic Acids Res. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-12 Completed Date: 2010-04-06 Revised Date: 2010-09-27 |
Medline Journal Info:
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Nlm Unique ID: 0411011 Medline TA: Nucleic Acids Res Country: England |
Other Details:
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Languages: eng Pagination: 1760-6 Citation Subset: IM |
Affiliation:
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Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Guanine
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chemistry* Guanosine / analogs & derivatives*, chemistry Hydrogen-Ion Concentration Oligodeoxyribonucleotides / chemistry Oligonucleotide Probes / chemistry* Pyrenes / chemistry RNA / chemistry* Thionucleosides / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Oligodeoxyribonucleotides; 0/Oligonucleotide Probes; 0/Pyrenes; 0/Thionucleosides; 118-00-3/Guanosine; 63231-63-0/RNA; 73-40-5/Guanine; 85-31-4/6-thioguanosine |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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