Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

FRET

  • Henderson James (Jim) CleavesIIEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_603-3

Synonyms

Definition

FRET is a technique used to measure the proximity of chemical groups in macromolecules or between host and guest molecules. It involves the use of a donor (in an excited electronic state) and acceptor chromophore. When they are in close proximity (usually <10 nm), the donor may transfer its energy to the acceptor through nonradiative dipole-dipole coupling. This is known as “Förster resonance energy transfer.” When both chromophores are fluorescent, the term “fluorescence resonance energy transfer” is used instead, although the energy is not actually transferred by fluorescence but by nonradiative transfer.

See Also

Keywords

Energy Transfer Electronic State Bioorganic Chemistry Fluorescence Resonance Energy Transfer Resonance Energy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Geophysical LaboratoryCarnegie Institution of WashingtonWashingtonUSA