Invitrogen™ Alexa Fluor™ 488 Streptavidin, 10 nm colloidal gold conjugate
On demandInvitrogen™ Alexa Fluor™ 488 Streptavidin, 10 nm colloidal gold conjugate
Alexa Fluor® 488 streptavidin comprises a biotin-binding protein (streptavidin) covalently attached to a fluorescent label (Alexa Fluor® dye). Streptavidin has a very high binding affinity for biotin, and a conjugate of streptavidin is commonly used together with a conjugate of biotin for specific detection of a variety of proteins, protein motifs, nucleic acids, and other molecules (for example, a biotinylated primary antibody bound to a protein target can be detected with a fluorescently labeled streptavidin). Strategies similar to this are used in many detection protocols including western blots, flow cytometry, imaging and microscopy, and microplate assays. Alexa Fluor® dye streptavidin conjugates are supplied as 1 mg lyophilized product or in 0.5 mL volumes of a 2 mg/mL solution.
Features
- Alexa Fluor® 488 streptavidin conjugate has Ex/Em maxima of ∼ (495/519)
- Bright, photostable fluorescence
- High solubility in aqueous solutions
- Available in multiple colors
- Ideal for western blots, flow cytometry, imaging and microscopy, microplate assays and more
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