Figure 4
From: Dicationic styryl dyes for colorimetric and fluorescent detection of nucleic acids
Molecular docking of (a) BT + , (b) BT2 + (NEt2) on a minor-groove DNA (4C64) and (c) BT + , (d) BT2 + (NEt2) at an intercalative site of DNA (108D). Black arrows indicate the electrostatic interaction of quaternary ammonium side chain to the phosphate backbone.
