Use of p<i>K</i><sub>a</sub> Differences To Enhance the Formation of Base Triplets Involving C−G and G−C Base Pairs
作者:Dong Li Chen、Larry W. McLaughlin
DOI:10.1021/jo000754w
日期:2000.11.1
of dG-dC basepairs than it does in the binding to dC-dGbasepairs. The d2APm derivative with a pK(a) of 3.3 functions better to form base triplets with dC-dGbasepairs than with dG-dC targets. Triplex T(m)'s in both cases are compared with the sequence containing the native dCresidue. The dC analogues appear to make two hydrogen bonds to a target dG baseresidue, one of which requires protonation