Synthesis and DNA Binding Properties of Iminodiacetic Acid-Linked Polyamides: Characterization of Cooperative Extended 2:1 Side-by-Side Parallel Binding
作者:Craig R. Woods、Takahiro Ishii、Dale L. Boger
DOI:10.1021/ja026588m
日期:2002.9.1
head-to-head by a functionalizable five-atom linker. It was found that the IDA linker exerts a unique influence over the DNA binding conformation differing from both the beta-alanine (extended) or gamma-aminobutyric acid (hairpin) linkers, resulting in cooperative parallel side-by-side 2:1 binding in an extended conformation most likely with a staggered versus stacked alignment. A generalized variant of a fluorescent
制备了一系列亚氨基二乙酸 (IDA) 连接的聚酰胺 (DpPyPyPy-IDA-PyPyPyDp),并构成通过可官能化的五原子接头头对头连接的聚酰胺。发现 IDA 接头对不同于 β-丙氨酸(延伸)或 γ-氨基丁酸(发夹)接头的 DNA 结合构象产生独特的影响,导致在最有可能具有交错排列与堆叠排列的扩展构象。在一系列包含系统变化的富含 A/T 的结合位点大小的发夹脱氧寡核苷酸上进行的荧光嵌入剂置换 (FID) 测定的通用变体用于区分 IDA 连接的聚酰胺的结合模式。