1 November 2010 Förster resonance energy transfer as a tool to study photoreceptor biology
Author Affiliations +
J. of Biomedical Optics, 15(6), 067001 (2010). doi:10.1117/1.3505023
Vision is initiated in photoreceptor cells of the retina by a set of biochemical events called phototransduction. These events occur via coordinated dynamic processes that include changes in secondary messenger concentrations, conformational changes and post-translational modifications of signaling proteins, and protein-protein interactions between signaling partners. A complete description of the orchestration of these dynamic processes is still unavailable. Described in this work is the first step in the development of tools combining fluorescent protein technology, Förster resonance energy transfer (FRET), and transgenic animals that have the potential to reveal important molecular insights about the dynamic processes occurring in photoreceptor cells. We characterize the fluorescent proteins SCFP3A and SYFP2 for use as a donor-acceptor pair in FRET assays, which will facilitate the visualization of dynamic processes in living cells. We also demonstrate the targeted expression of these fluorescent proteins to the rod photoreceptor cells of Xenopus laevis, and describe a general method for detecting FRET in these cells. The general approaches described here can address numerous types of questions related to phototransduction and photoreceptor biology by providing a platform to visualize dynamic processes in molecular detail within a native context.
Stephanie C. Hovan, Scott Howell, Paul Park, "Förster resonance energy transfer as a tool to study photoreceptor biology," Journal of Biomedical Optics 15(6), 067001 (1 November 2010). http://dx.doi.org/10.1117/1.3505023
Submission: Received ; Accepted

Fluorescence resonance energy transfer

Fluorescent proteins



Signal processing

Image fusion



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