
The Spinach fluorescence turn-on RNA aptamer. (A) Cartoon representation of the G4-containing core of Spinach bound to its cognate fluorophore DFHBI (PDB:4TS2; Warner et al. 2014). Locations of the mixed-sequence quartet and base triple are indicated. Dots indicate 28 nt omitted from the figure. (B) Schematic of the quadruplex element of Spinach.










