Correlated Movement and Bending of Nucleic Acid Structures Visualized by Multicolor Single‐Molecule Spectroscopy

Abstract

At the end of the rainbow.... The structure and dynamics of three- and four- way DNA junctions are studied using triple alternating laser excitation. Steroid binding distorts the structure of three-way junctions with correlated bending of all branches towards a steeper pyramid (see picture). In four-way junctions, the dynamics of three distances are visualized simultaneously.