Active Control by External Factors of DNA Recognition Behavior of α-Peptide Ribonucleic Acids Containing Basic Amino Acid Residues
作者:Takehiko Wada、Nobuya Sawa、Hirofumi Sato、Mayuko Kikkawa、Keiko Onodera、Seiji Sakamoto、Yoshihisa Inoue
DOI:10.1246/cl.2010.112
日期:2010.2.5
A series of novel α-peptide ribonucleic acid (αPRNA) oligomers, possessing alternative αPRNA–Gly/Lys sequences, were newly designed, synthesized, and evaluated as the second-generation PRNA. As expected, the αPRNA with Lys formed stable sequence-specific complex with the complementary DNA, for which both the hydrogen-bonding interactions between the complementary nucleobase pairs and the electrostatic interactions between the ammonium cation on the lysine side chain and the DNA phosphate anion on the backbone are jointly responsible.
我们新设计、合成并评估了一系列具有αPRNA-Gly/Lys替代序列的新型α肽核糖核酸(αPRNA)寡聚体作为第二代PRNA。不出所料,带有赖氨酸的 αPRNA 与互补 DNA 形成了稳定的序列特异性复合物,互补核碱基对之间的氢键相互作用以及赖氨酸侧链上的铵阳离子和 DNA 主干上的磷酸阴离子之间的静电作用共同作用了这一复合物。