作者:Vipin Kumar、Nikita Brodyagin、Eriks Rozners
DOI:10.1002/cbic.202000432
日期:2020.12
PNAs form higher‐stability triple helices with dsRNA than DNA. Structural considerations suggested that extending the PNA backbone by one carbon atom might reverse this preference in favor of DNA; however, experiments disproved this hypothesis. The studies suggested that PNA has an inherent preference for forming A‐form triple‐helical structures and, hence, has higher affinity for RNA than DNA.
PNA 与 dsRNA 形成比 DNA 稳定性更高的三螺旋。结构考虑表明,将 PNA 主链延长一个碳原子可能会逆转这种偏好,有利于 DNA;然而,实验反驳了这个假设。研究表明,PNA 具有形成 A 型三螺旋结构的内在偏好,因此对 RNA 的亲和力高于 DNA。