2′,4′-BNA bearing a 2-pyridine nucleobase for CG base pair recognition in the parallel motif triplex DNA
作者:Yoshiyuki Hari、Sachiko Matsugu、Hiroyasu Inohara、Yuri Hatanaka、Masaaki Akabane、Takeshi Imanishi、Satoshi Obika
DOI:10.1039/c004895j
日期:——
promising nucleobase for the sequence-selective recognition of a CG base pair within double-stranded DNA (dsDNA) in a parallel motif triplex. Moreover, PyB in TFOs showed stronger affinity to a CG base pair than Py with further increase in the selectivity. Using TFO including multiple PyB units, triplex formation with dsDNA containing three CG base pairs was observed.
我们成功合成了包含脱氧核糖核苷酸(y)带有2-吡啶核碱基或2',4'-BNA同系物(PY乙)。通过紫外熔融实验,发现2-吡啶是一个非常有前途的核碱基,用于序列选择识别平行基序三元组中双链DNA(dsDNA)中的CG碱基对。而且,PY乙 在TFO中显示出比CG碱基对更强的亲和力 y随着选择性的进一步提高。使用TFO 包括多个 PY乙 单位,三链形成与dsDNA包含三个 CG 观察到碱基对。