DNA Three Way Junction Core Decorated with Amino Acids-Like Residues-Synthesis and Characterization

Abstract

Construction and physico-chemical behavior of DNA three way junction (3WJ) functionalized by protein-like residues (imidazole, alcohol and carboxylic acid) at unpaired positions at the core is described. One 5′-C(S)-propargyl-thymidine nucleotide was specifically incorporated on each strand to react through a post synthetic CuACC reaction with either protected imidazolyl-, hydroxyl- or carboxyl-azide. Structural impacts of 5′-C(S)-functionalization were investigated to evaluate how 3WJ flexibility/stability is affected.

Keywords

• three way junction
• convertible nucleotide
• CuACC
• chemically modified oligonucleotides