4. Detecting RNA/DNA Hybridization Using Double-Labeled Donor Probes With Enhanced Fluorescence Resonance Energy Transfer Signals
| Abstract |
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Fluorescence resonance energy transfer (FRET) occurs when two fluorophores are in close proximity, and the emission energy
of a donor fluorophore is transferred to excite an acceptor fluorophore. Using such fluorescently labeled oligonucleotides
as FRET probes, makes possible specific detection of RNA molecules even if similar sequences are present in the environment.
A higher ratio of signal to background fluorescence is required for more sensitive probe detection. We found that double-labeled
donor probes labeled with BODIPY dye resulted in a remarkable increase in fluorescence intensity compared to single-labeled
donor probes used in conventional FRET. Application of this double-labeled donor system can improve a variety of FRET techniques.
Series: Methods in Molecular Biology | Volume: 335 | Pub. Date: Apr-01-2006 | Page Range: 43-56 | DOI: 10.1385/1-59745-069-3:43
Subject: Biochemistry
Key Words: FRET - nucleic acid - acceptor probe - donor probe - BODIPY 493/503 - Cy5 - target RNA - plant virus - viral RNA
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