2-Guanidyl pyridine PNA nucleobase for triple-helical Hoogsteen recognition of cytosine in double-stranded RNA
2-Guanidyl pyridine PNA nucleobase for triple-helical Hoogsteen recognition of cytosine in double-stranded RNA
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2-胍基吡啶 PNA 核碱基用于双链 RNA 中胞嘧啶的三螺旋 Hoogsteen 识别
DOI：
10.1039/d2cc02615e
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发表时间：
2022
影响因子：
4.9
通讯作者：
Rozners, Eriks
中科院分区：
文献类型：
--
作者：
Ryan, Christopher A.;Baskevics, Vladislavs;Katkevics, Martins;Rozners, Eriks
在三链体形成肽核酸中，一种新的2-胍基吡啶核碱基（V）通过接合C-G碱基对的整个Hoogsteen面，能够识别dsRNA的多嘌呤段中多达两个胞嘧啶中断。从头算和分子动力学模拟提供了对稳定V·C-G三重态的氢键相互作用的见解。我们的研究结果为未来设计改进的核碱基提供了见解，这是朝着识别任何dsRNA序列的最终目标迈出的重要一步。
In triplex-forming peptide nucleic acid, a novel 2-guanidyl pyridine nucleobase (V) enables recognition of up to two cytosine interruptions in polypurine tracts of dsRNA by engaging the entire Hoogsteen face of C–G base pair. Ab initio and molecular dynamics simulations provided insights into H-bonding interactions that stabilized V·C–G triplets. Our results provided insights for future design of improved nucleobases, which is an important step towards the ultimate goal of recognition of any sequence of dsRNA.