Design, synthesis, biophysical and primer extension studies of novel acyclic butyl nucleic acid (BuNA)
作者:Vipin Kumar、Kiran R. Gore、P. I. Pradeepkumar、Venkitasamy Kesavan
DOI:10.1039/c3ob41244j
日期:——
that (S)-BuNA is capable of making duplexes with its complementary strands and integration of (S)-BuNA nucleotides into DNA duplex does not alter the B-type-helical structure of the duplex. Furthermore, (S)-BuNA oligonucleotides and (S)-BuNA substituted DNA strands were studied as primer extensions by DNA polymerases. This study revealed that the acyclic scaffold is tolerated by enzymes and is therefore
合成了一种新的核酸类似物,称为无环(S)-丁基核酸(BuNA),其由含有磷酸二酯键并带有天然核碱基的无环骨架组成。接下来,将(S)-BuNA核苷酸掺入DNA链中,研究其对双链体稳定性和结构构象变化的影响。圆二色性(CD),UV熔解和非变性凝胶电泳(天然PAGE)研究表明(S)-BuNA能够与其互补链形成双链体,而(S)-BuNA核苷酸整合到DNA双链体中却没有改变双链体的B型螺旋结构。此外,(S)-BuNA寡核苷酸和(S)-BuNA取代的DNA链被DNA聚合酶研究为引物延伸。这项研究表明,无环支架可以被酶所耐受,因此在某种程度上具有生物相容性。