PNA−DNA Duplexes, Triplexes, and Quadruplexes Are Stabilized with <i>trans-</i>Cyclopentane Units
作者:Ethan A. Englund、Qun Xu、Mark A. Witschi、Daniel H. Appella
DOI:10.1021/ja064317w
日期:2006.12.1
acid mimics that bind to complementary DNA and RNA with high affinity and selectivity. PNA can bind to nucleic acids in a number of different ways. Currently, the formation of PNA-oligonucleotide duplex, triplex, and quadruplex structures have been reported. PNAs have been used in numerous biomedicial applications, but there are few strategies to predictably improve the binding properties of PNAs by backbone
肽核酸 (PNA) 是非天然核酸模拟物,能够以高亲和力和选择性结合互补 DNA 和 RNA。PNA 可以通过多种不同方式与核酸结合。目前,已经报道了PNA-寡核苷酸双链体、三链体和四链体结构的形成。PNA 已被用于许多生物医学应用,但很少有策略可以通过骨架修饰可预测地改善 PNA 的结合特性。我们一直在研究将 (S,S)-反式环戊烷二胺单元 (tcyp) 加入 PNA 骨架的好处。在本通讯中,我们报告了与 tcyp 掺入 PNA-DNA 双链体、三链体和四链体相关的稳定性改进。