C-terminal HIS-tagged full-length Red Fluorescent Protein, expressed in E. coli.

dsRed, a tetrameric fluorescent protein cloned from the Discosoma genus of coral, has a longer wavelength substitute for green fluorescent protein (GFP) mutants for in vivo protein labeling. Bulk and single-molecule studies of the recombinant protein revealed that the dsRed chromophore shows high stability against photobleaching as compared to GFP mutants (1).