Streptavidin, Alexa Fluor™ 488 Conjugate
Invitrogen™
Streptavidin, Alexa Fluor™ 488 Conjugate
Alexa Fluor™ 488 streptavidin comprises a biotin-binding protein (streptavidin) covalently attached to a fluorescent label (Alexa Fluor™ dye). Streptavidin hasRead more
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Catalog NumberFormQuantity
S32354Liquid0.5 mL
S11223Solid1 mg
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Catalog number S32354
Price (USD)/ 0.5 mL
341.65
Online exclusive
361.00 
Save 19.35 (5%)
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Form:
Liquid
Quantity:
0.5 mL
Price (USD)/ 0.5 mL
341.65
Online exclusive
361.00 
Save 19.35 (5%)
Add to cart
Streptavidin, Alexa Fluor™ 488 Conjugate
Catalog numberS32354
Price (USD)/ 0.5 mL
341.65
Online exclusive
361.00 
Save 19.35 (5%)
-
Add to cart

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.

Important Features of Alexa Fluor™ 488 Streptavidin Conjugates:
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

Properties of Alexa Fluor™ Dyes
Alexa Fluor™ dyes are organic fluorescent dyes developed for better performance in imaging and other labeling protocols and exhibit improved photostability and brightness and improved solubility in aqueous solutions. Available in a broad range of colors, these dyes are a good choice for most imaging applications.

Blocking Endogenous Biotin
Naturally occurring biotins can interfere with biotin-streptavidin detection schemes. For experiments involving fixed and permeabilized cells, try our Endogenous Biotin-Blocking Kit (Cat. No. E21390) to minimize this interference.

See User Manual for solubility instructions.

For Research Use Only. Not for use in diagnostic procedures.
Specifications
Concentration2 mg/mL
ConjugateAlexa Fluor 488
Quantity0.5 mL
Shipping ConditionWet Ice
FormLiquid
Product LineAlexa Fluor™
Product TypeStreptavidin Conjugate (fluorescent)
Label or DyeAlexa Fluor
Unit Size0.5 mL
Contents & Storage
Store in refrigerator (2–8°C) and protect from light.