Streptavidin, Alexa Fluor™ 488 Conjugate
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 NumberQuantityForm
S112231 mgSolid
S323540.5 mLLiquid
Catalog number S11223
Price (USD)/ 1 mg
294.65
Online exclusive
310.00 
Save 15.35 (5%)
-
Add to cart
Quantity:
1 mg
Form:
Solid
Price (USD)/ 1 mg
294.65
Online exclusive
310.00 
Save 15.35 (5%)
Add to cart
Streptavidin, Alexa Fluor™ 488 Conjugate
Catalog numberS11223
Price (USD)/ 1 mg
294.65
Online exclusive
310.00 
Save 15.35 (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
ConjugateAlexa Fluor 488
Quantity1 mg
Excitation/Emission495/519 nm
Shipping ConditionRoom Temperature
FormSolid
Product LineAlexa Fluor™
Product TypeStreptavidin Conjugate (fluorescent)
Label or DyeAlexa Fluor
Unit Size1 mg
Contents & Storage
Store in freezer (-5°C to -30°C) and protect from light.