CAG repeat DNA and RNA. One derivative, NBzA, modified by incorporating an additional ring to the azaquinolone was found to bind to both d(CAG)9 and r(CAG)9. NBzA binding to d(CAG)9 was similar to NA binding in terms of large changes in the SPR assay and circulardichroism (CD) as well as pairwise binding, as assessed by electron spray ionization time‐of‐flight (ESI‐TOF) massspectrometry. For the binding
Photoswitchable DNA-binding ligands should be useful for controlling diverse biological functions involving DNA and reversible assembly of DNA-based nanostructures. In work directed towards the development of photoswitchableligands with various sequence specificities, we have elaborated an efficient synthesis of photoswitchableunsymmetricalligands possessing pairs of different base recognition elements