Toward encoding reactivity using double-stranded DNA. Sequence-dependent native chemical ligation of DNA binding polyamides
摘要:
The coupling reaction between distamycin-related polyamides equipped with cysteine and thioester groups can be accelerated in the presence of double-stranded (ds) oligonucleotides with selected sequences. While the coupling reaction of reactive partners containing three pyrrole units is accelerated by dsDNAs containing ATTTTA or ATGTTA sites, the heterodimeric coupling between a tripyrrole and a polyamide equipped with two pyrroles and one imidazole, is accelerated by the latter DNA, but not by the other containing the A/T rich tract. These differences can be exploited for selecting preferred coupling pairs from a mixture of reactive monomers; therefore the reaction outcome depends on the instructions provided by the dsDNA sequence. (C) 2013 Elsevier Ltd. All rights reserved.
Design, synthesis, and intracellular localization of a fluorescently labeled DNA binding polyamide related to the antibiotic distamycin
作者:Sanjay K. Sharma、Andrew T. Morrissey、Gerald G. Miller、William H. Gmeiner、J.William Lown
DOI:10.1016/s0960-894x(01)00064-6
日期:2001.3
The design and synthesis of the lipophilic (9) and fluorescent (10) conjugates of a structural analogue of distamycin and their in vitro cellular localization studies are reported. Confocal laser scanning microscopy (CLSM) indicates that 10 rapidly enters human ovarian adenocarcinoma (SKOV-3) cells with principal uptake in mitochondria and uniform cytoplasmic distribution.