sulfo-Cyanine3 streptavidin
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| A13S0 | 100 ug | – | in stock | |
| 113S0 | 1 mg | $185 | in stock |
Streptavidin is a tetrameric biotin-binding protein derived from the bacterium Streptomyces avidinii. Streptavidin binds up to four biotin molecules with high affinity and selectivity via multiple hydrogen bonds and van der Waals interactions. Due to the lack of carbohydrate modifications and a near-neutral pI, streptavidin exhibits less nonspecific binding than another biotin-binding protein — avidin. Streptavidin also has high thermostability and resistance against extreme pH, denaturing agents, and enzymatic degradation, allowing using this protein under various experimental conditions.
Fluorescent conjugates of streptavidin are commonly used as a second-step reagent for specific detection of a variety of biotin-labeled biomolecules, such as proteins (antibodies, etc.), nucleic acids, lipids, and other molecules in indirect immunofluorescent staining, western blots, flow cytometry, microplate assays, and other detection techniques.
This streptavidin is a lyophilized conjugate with sulfo-Cyanine3, a hydrophilic orange fluorophore with spectral characteristics similar to Cy3® (absorption max. at 548 nm, emission max. at 563 nm).
The recommended concentration range for use is 0.5-10 µg/mL. Avoid using biotin-containing solutions (some serums, RPMI 1640, etc.) as diluents.
Absorption and emission spectra of sulfo-Cyanine3
Recommended protocol
Calculator
Customers also purchased with this product
sulfo-Cyanine5 streptavidin
sulfo-Cyanine5 conjugate of streptavidin, a high-affinity biotin-binding protein, for immunofluorescence, western blots, microplate assays, and other applications use.sulfo-Cyanine5 azide
Water soluble sulfo-Cyanine5 fluorescent dye azide for click chemistry.DBCO-PEG6-NHS ester
A heterobifunctional linker with DBCO and NHS ester function groups flanking PEG6 (hexaethylene glycol).General properties
| Appearance: | pink solid |
| Solubility: | good in water |
| Storage conditions: | Transportation: at room temperature for 1 week. Store at -20°С 9 months. |
| MSDS: | Download |
| Product specifications |
Spectral properties
| Excitation/absorption maximum, nm: | 548 |
| ε, L⋅mol−1⋅cm−1: | 162000 |
| Emission maximum, nm: | 563 |
| Fluorescence quantum yield: | 0.1 |
| CF260: | 0.03 |
| CF280: | 0.06 |
Your cart is empty
$ 
