PNA containing isocytidine nucleobase: synthesis and recognition of double helical RNA.

PNA containing isocytidine nucleobase: synthesis and recognition of double helical RNA.
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含有异胞苷核碱基的 PNA:双螺旋 RNA 的合成和识别。

DOI:
10.1016/j.bmcl.2011.01.130
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发表时间:
2011
影响因子:
2.7
通讯作者:
Rozners,Eriks
Rozners,Eriks
中科院分区:
医学4区
文献类型:
--
作者:
Zengeya,Thomas;Li,Ming;Rozners,Eriks

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含有5-甲基异胞苷(iC)核碱基的肽核酸(PNA 1)已被合成。利用等温滴定量热法研究了PNA 1与具有可变碱基对的RNA发夹与iC相互作用之间的三螺旋形成。iC核碱基识别所提出的目标,RNA的聚嘌呤段中的C-G倒位,具有比天然核碱基略高的亲和力,尽管识别的序列选择性低。与未修饰的PNA相比,PNA 1对其RNA靶标具有较低的亲和力。
Peptide nucleic acid (PNA1) containing a 5-methylisocytidine (iC) nucleobase has been synthesized. Triple helix formation between PNA1 and RNA hairpins having variable base pairs interacting with iC was studied using isothermal titration calorimetry. The iC nucleobase recognized the proposed target, C-G inversion in polypurine tract of RNA, with slightly higher affinity than the natural nucleobases, though the sequence selectivity of recognition was low. Compared to non-modified PNA, PNA1 had lower affinity for its RNA target.
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发表时间: 2010-06-30
影响因子: 15
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