Selective recognition of CG interruption by 2′,4′-BNA having 1-isoquinolone as a nucleobase in a pyrimidine motif triplex formation
作者:Yoshiyuki Hari、Satoshi Obika、Mitsuaki Sekiguchi、Takeshi Imanishi
DOI:10.1016/s0040-4020(03)00728-2
日期:2003.6
To develop a novel nucleoside analogue for the effective recognition of CG interruption in a homopurine-homopyrimidine tract of double-stranded DNA (dsDNA), we succeeded in the synthesis of a triplex-forming oligonucleotide (TFO) containing a novel 2',4'-BNA (Q(B)) bearing 1-isoquinolone as a nucleobase, and the triplex-forming ability and sequence-selectivity of the TFO (TFO-Q(B)) were examined. On melting temperature (T-m) measurements, it was found that the TFO-Q(B) formed a stable triplex DNA in a highly sequence-selective manner under near physiological conditions. (C) 2003 Elsevier Science Ltd. All rights reserved.