Figure 1

Conformational pluralism of PyroTASQ.
(A). Conformational switch promoted by its interaction with quadruplexes: the formation of the intramolecular G-quartet triggers the fluorescence of the pyrene template. (B) Schematic representation of the possible ‘open’, ‘semi-closed’ (with one or two guanines stacking on the template, 1G and 2G, respectively) and ‘closed’ conformations of PyroTASQ.