Design, synthesis, and DNA binding characteristics of a group of orthogonally positioned diamino, N-formamido, pyrrole- and imidazole-containing polyamides
作者:Sameer Chavda、Balaji Babu、Pravin Patil、Adam Plaunt、Amanda Ferguson、Megan Lee、Samuel Tzou、Robert Sjoholm、Toni Rice、Hilary Mackay、Joseph Ramos、Shuo Wang、Shicai Lin、Konstantinos Kiakos、W. David Wilson、John A. Hartley、Moses Lee
DOI:10.1016/j.bmc.2013.04.001
日期:2013.7
solubility and enhanced binding affinity, whilst retaining DNA minor groove and sequence specificity compared to their monoamino/monocationic counterparts. The synthesis and DNA binding properties of the following diamino PAs: f-IPI (3a), f-IPP (4), f-PIP (5), and f-PPP (6) are described. P denotes the site where a 1-propylamino group is attached to the N1-position of the heterocycle. Binding of the diamino
与单氨基/单阳离子对应物相比,正交定位的二氨基/双阳离子聚酰胺 (PA) 具有良好的水溶性和增强的结合亲和力,同时保留了 DNA 小沟和序列特异性。描述了以下二氨基 PA 的合成和 DNA 结合特性:fI P I ( 3a )、fI P P ( 4 )、f -P IP ( 5 ) 和 fP P P ( 6 )。磷表示1-丙基氨基连接到杂环的N1-位的位点。通过 DNase I 足迹、热变性、圆二色滴定、生物传感器表面等离子体共振 (SPR) 和等温滴定量热法 (ITC) 研究评估二氨基 PA 与 DNA 的结合。根据 SPR 研究,与单氨基类似物 f- 相比,fI P I ( 3a ) 结合更强烈 ( K eq = 2.4 × 10 8 M -1 ) 并且与其同源序列 5'-ACGCGT-3' 具有相当的序列选择性IPI ( 1 )。fI P I ( 3a的结合) 到 5'-ACGCGT-3'