1378847-47-2Relevant academic research and scientific papers
Clicked polycyclic aromatic hydrocarbon as a hybridization-responsive fluorescent artificial nucleobase in pyrrolidinyl peptide nucleic acids
Mansawat, Woraluk,Boonlua, Chalothorn,Siriwong, Khatcharin,Vilaivan, Tirayut
, p. 3988 - 3995 (2012/07/14)
Pyrene as well as other aromatic hydrocarbons could be successfully incorporated into pyrrolidinyl peptide nucleic acid bearing a d-prolyl-2-aminocyclopentane carboxylic acid backbone (acpcPNA) as a base surrogate via a triazole linker employing Cu-catalyzed alkyne-azide cycloaddition (click chemistry). The labeling can be performed via a pre-clicked pyrene monomer or by post-synthetic modification of azide-containing acpcPNA on solid support. Thermal denaturation experiments suggested that the pyrene-triazole unit can behave as a universal base in the acpcPNA system. The mode of base-pairing has been proposed based on molecular dynamics simulations. Importantly, the fluorescence spectra of the pyrene-labeled single stranded acpcPNA and its hybrid with DNA are quite different. The ratio of emissions at 380 and 460 nm changed significantly (up to a factor of 7) upon hybrid formation with complementary DNA.
