For sensitive detection and localization of biotinylated proteins
- Highly sensitive fluorescent detection of any biotinylated molecule
- Reagent optimized for use with the Penta·His Biotin Conjugate
For use in conjunction with the Penta·His Biotin Conjugate, QIAGEN offers streptavidin conjugated to the intensely fluorescing algal pigment R-phycoerythrin (Streptavidin-R-PE).
The high quantum yield (0.82) and extinction coefficient (2 x 106) of R-PE make it one of the best fluorophores currently available for high-sensitivity detection. By utilizing the extremely high affinity of the streptavidin-biotin interaction and the spectroscopic properties of R-phycoerythrin, the sensitivity of immunoassays can be increased some five- to tenfold over the corresponding Alexa 532 Conjugate.