Characterization of photophysical and base-mimicking properties of a novel fluorescent adenine analogue in DNA
作者:Anke Dierckx、Peter Dinér、Afaf H. El-Sagheer、Joshi Dhruval Kumar、Tom Brown、Morten Grøtli、L. Marcus Wilhelmsson
DOI:10.1093/nar/gkr010
日期:2011.5
diversity of fluorescent base analogues with improved properties, we here present the straightforward click-chemistry-based synthesis of a novel fluorescent adenine-analogue triazole adenine (AT) and its photophysical characterization inside DNA. AT shows promising properties compared to the widely used adenine analogue 2-aminopurine. Quantum yields reach >20% and >5% in single- and double-stranded DNA, respectively
为了增加具有改善的性质的荧光碱基类似物的多样性,我们在这里提出了一种新的荧光腺嘌呤类似物三唑腺嘌呤(A的简单的基于点击化学合成Ť)及其光物理内DNA表征。甲Ť示出有前途的性能相比,广泛使用的腺嘌呤类似物2-氨基嘌呤。单链和双链 DNA 的量子产率分别达到 >20% 和 >5%,并且显示出对相邻碱基的依赖性。此外,A T仅显示 DNA 双链体的轻微不稳定,与 2-氨基嘌呤相当,并且圆二色性研究表明 A T仅对正常 B-DNA 造成最小的结构扰动。此外,我们发现 A T显示出与胸腺嘧啶良好的碱基配对特性,更令人惊讶的是,它与正常腺嘌呤也显示出良好的碱基配对特性。总之,A T作为一种新的荧光腺嘌呤类似物显示出强大的潜力,用于监测 DNA 微环境内的变化。