synthesized 2′-O-monohaloethoxymethyl-modified RNAs and evaluated their duplex formation ability. The effects of 2-chloroethoxymethyl (MCEM) and 2-fluoroethoxymethyl groups on the RNA/RNAduplex stability was found to depend on both base sequences and halogen atoms. Only the 2′-O-MCEM-rU12/rA12 duplex was found to be significantly more stable than the unmodified duplex. In this study, it is proposed through
我们合成了2' - O-单卤代乙氧基甲基修饰的RNA,并评估了其双链体形成能力。发现2-氯乙氧基甲基(MCEM)和2-氟乙氧基甲基对RNA / RNA双链体稳定性的影响取决于碱基序列和卤素原子。发现仅2' - O -MCEM-rU 12 / rA 12双链体比未修饰的双链体明显更稳定。在这项研究中,通过UV熔解分析,等温滴定量热法测量和分子力学计算,提出了这种稳定化可能是由于MCEM基团和互补链中核碱基之间相互作用而产生的焓稳定化所致。