Details

Autor(en) / Beteiligte

• Stein, Ingo H
• Steinhauer, Christian
• Tinnefeld, Philip

Titel

Single-Molecule Four-Color FRET Visualizes Energy-Transfer Paths on DNA Origami

Ist Teil von

• Journal of the American Chemical Society, 2011-03, Vol.133 (12), p.4193-4195

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2011

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• Fluorescence resonance energy transfer (FRET) represents a mechanism to transport light energy at the nanoscale, as exemplified by nature’s light-harvesting complexes. Here we used DNA origami to arrange fluorophores that transport excited-state energy from an input dye to an output dye. We demonstrate that energy-transfer paths can be controlled on the single-molecule level by the presence of a “jumper” dye that directs the excited-state energy either to a red or to an IR output dye. We used single-molecule four-color FRET with alternating laser excitation to sort subpopulations and to visualize the control of energy transfer.