2′-Deoxy-N4-phenylcarbamoylcytidine
(Pc) was designed for triplex
recognition of the cytosineguanine base pair at physiological pH values
to assist in the development of triplex-forming oligomers. Thermal
denaturation of a triplex mixture in which the third strand incorporated
Pc as a central nucleoside showed
that, at pH 6·1, Pc binds
selectively—though weakly—to the target cytosine—guanine and
also to guanine—cytosine; but the gel mobilities of the same mixtures
indicate the possibility of specificity for the target cytosine-guanine base
pair at pH values higher than 6·1. The result may provide leads useful
in the development of improved triplex-forming oligomers.
2′-
脱氧-N4-
苯基
氨基甲酰
胞嘧啶
(Pc)是为在生理 pH 值下识别
胞嘧啶鸟嘌呤碱基对而设计的三重
在生理 pH 值下识别
胞嘧啶鸟嘌呤碱基对
以帮助开发三聚体形成的低聚物。热
三链混合物的热变性,其中第三链含有
Pc 作为中心核苷的三链混合物的热变性显示
在 pH 值为 6-1 时,Pc
选择性地与目标
胞嘧啶-
鸟嘌呤和
与
鸟嘌呤-
胞嘧啶的结合;但相同混合物的凝胶流动性
但相同混合物的凝胶流动性表明,在 pH 值高于 6-1 时,
PCC 可能对目标
胞嘧啶-
鸟嘌呤碱基对具有特异性。
对的特异性。这一结果可能为
这一结果可能会为开发改良的三重形成低聚物提供有用的线索。