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Nat Methods. 2008 May;5(5):401-3. doi: 10.1038/nmeth.1207. Epub 2008 Apr 20.

Fluorescent protein FRET pairs for ratiometric imaging of dual biosensors.

Author information

  • 1University of Alberta, Department of Chemistry, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada.

Abstract

Fluorescence resonance energy transfer (FRET) with fluorescent proteins is a powerful method for detection of protein-protein interactions, enzyme activities and small molecules in the intracellular milieu. Aided by a new violet-excitable yellow-fluorescing variant of Aequorea victoria GFP, we developed dual FRET-based caspase-3 biosensors. Owing to their distinct excitation profiles, each FRET biosensor can be ratiometrically imaged in the presence of the other.

PMID:
18425137
[PubMed - indexed for MEDLINE]
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