作者:Alexander R. Rovira、Andrea Fin、Yitzhak Tor
DOI:10.1021/jacs.5b10420
日期:2015.11.25
An evolved fluorescent ribonucleoside alphabet comprising isomorphic purine ((tz)A, (tz)G) and pyrimidine ((tz)U, (tz)C) analogues, all derived from isothiazolo[4,3-d]pyrimidine as a common heterocyclic core, is described. Structural and biochemical analyses illustrate that the nucleosides, particularly the C-nucleosidic purine analogues, are faithful isomorphic and isofunctional surrogates of their
一种进化的荧光核糖核苷字母表,包含同形嘌呤 ((tz)A, (tz)G) 和嘧啶 ((tz)U, (tz)C) 类似物,均源自异噻唑并 [4,3-d] 嘧啶作为常见的杂环核心,进行了描述。结构和生化分析表明,核苷,特别是 C-核苷嘌呤类似物,是其天然对应物的忠实同构和同功能替代物,与衍生自噻吩并 [3,4-d]-嘧啶的 RNA 字母表相比,显示出改进的特征。氮在与嘌呤的 N7 等效的位置恢复会导致“同功能”行为,如腺苷脱氨酶将 (tz)A 脱氨的能力与天然底物腺苷一样有效地说明。