2014年8月
Structural Evaluation of Tandem Hairpin Pyrrole-Imidazole Polyamides Recognizing Human Telomeres
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
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- 巻
- 136
- 号
- 32
- 開始ページ
- 11546
- 終了ページ
- 11554
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/ja506058e
- 出版者・発行元
- AMER CHEMICAL SOC
A polyamide containing N-methylpyrrole (Py) and N-methylimidazole (Im), designated PIPA, binds with high affinity and specificity to specific nucleotide sequences in the minor groove of double-helical DNA. Based on a recent report of the synthesis of PIPA for telomere visualization, the present paper focused on the size of the connecting part (hinge region) of two PIPA segments of the tandem hairpin PIPA, Dab(Im-Im-Py)-Py-Py-Py-Im-[Hinge]-Dab(Im-Im-Py)-Py-Py-Py-Im-beta Ala-NH(CH2)(3)N(CH3)-(CH2)(3)NH-[Dye]. The present paper also describes the characterization of binding by measuring the thermal melting temperature and surface plasmon resonance and by specific staining of telomeres (TTAGGG)n in human cells. Micro-heterogeneity was also investigated by high-resolution mass spectrometry. We found that the optimal compound as the hinge segment for telomere staining was [-NH(C2H4O)(2)(C2H4)CO-] with tetramethylrhodamine as the fluorescent dye.
- リンク情報
- ID情報
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- DOI : 10.1021/ja506058e
- ISSN : 0002-7863
- PubMed ID : 25036716
- Web of Science ID : WOS:000340442700053