FRET (Fluorescence Resonance Energy Transfer)
FRET (Fluorescence Resonance Energy Transfer) — A distance-dependent transfer of energy between two fluorophores used to measure molecular interactions, conformational changes, and protease activity in peptide assays.
What Is FRET?
Fluorescence (Förster) resonance energy transfer (FRET) is the distance-dependent transfer of energy from a donor fluorophore to an acceptor fluorophore, occurring when the two are within 1-10 nm. FRET is widely used in peptide research for measuring binding, conformational changes, and protease activity with FRET-quenched peptide substrates.
Applications
- Protease assays: Donor and quencher flanking a cleavage site. Cleavage separates them, restoring fluorescence
- Binding: Donor-labeled peptide + acceptor-labeled target. FRET signal reports complex formation
- Conformational sensors: FRET between two sites on the same peptide reports distance changes during folding or binding
Frequently Asked Questions
What is FRET (Fluorescence Resonance Energy Transfer)?
A distance-dependent transfer of energy between two fluorophores used to measure molecular interactions, conformational changes, and protease activity in peptide assays.
Why is FRET (Fluorescence Resonance Energy Transfer) important in peptide research?
FRET (Fluorescence Resonance Energy Transfer) is a fundamental concept in analytical as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.
Authority Sources
- FRET (Fluorescence Resonance Energy Transfer) on Wikipedia
- Search FRET (Fluorescence Resonance Energy Transfer) on PubChem (NIH)
- Research articles on ScienceDirect