Description
pDsRed-Express-1 is a promoterless mammalian expression vector that can be used to monitor transcription from different promoters and promoter/enhancer combinations inserted into MCS. It encodes DsRed-Express, a variant ofDiscosomasp. red fluorescent protein (DsRed). DsRed-Express contains nine amino acid substitutions which improve the solubility of the protein, reduce the time from transfection to detection of red fluorescence, and decrease the level of residual green emission. When DsRed-Express is expressed in mammalian cell cultures, red-emitting cells can be detected by either fluorescence microscopy or flow cytometry 8–12 hours after transfection. Although DsRed-Express most likely forms the same tetrameric structure as wild-type DsRed, DsRed-Express displays a reduced tendency to aggregate. The DsRed-Express coding sequence is human codon-optimized for high expression in mammalian cells.