Abstract:Fluorescent Timer, or DsRed1-E5, is a mutant of the red fluorescent protein, dsRed, developed by Terskikh and colleagues. Its fluorescence shifts over time from green to red as the protein matures. This molecular clock gives temporal and spatial information on protein turnover. To visualize mitochondrial turnover, we targeted Timer to the mitochondrial matrix with a mitochondrial targeting sequence (coined “MitoTimer”) and cloned it into a tetracycline-inducible promoter construct to regulate its expression. H… Show more
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