Short peptide nucleic acids bind strongly to homopurine tract of double helical RNA at pH 5.5.
Short peptide nucleic acids bind strongly to homopurine tract of double helical RNA at pH 5.5.
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DOI:
10.1021/ja101384k
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发表时间:
2010-06-30
影响因子:
15
通讯作者:
Rozners, Eriks
中科院分区:
文献类型:
--
作者:
Li, Ming;Zengeya, Thomas;Rozners, Eriks
The important role that non-coding RNA plays in cell biology makes it an attractive target for molecular recognition. However, the discovery of small molecules that bind double helical RNA selectively and may serve as biochemical probes and potential drug leads has been relatively slow. Herein, we show that peptide nucleic acids, as short as six nucleobases, bind very strongly (Ka > 107) and sequence selectively to a homopurine tract of double helical RNA at pH 5.5. The isothermal titration calorimetry and circular dichroism experiments suggest that the binding mode may be a sequence selective triple helix formation. Our results have implications for development of biochemical probes to study function of non-coding RNAs and design of compounds with potential antibacterial and antiviral activity.
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