Invitrogen™

Streptavidin, Alexa Fluor™ 488 conjugate

Catalog number: S11223
Invitrogen™

Streptavidin, Alexa Fluor™ 488 conjugate

Catalog number: S11223
Catalog Number
S11223
also known as S-11223
Unit Size
1 mg
Price (USD)
Price: 310.00
Online price: 294.65
Your price:
Availability
-
Quantity
Catalog Number
Unit Size
0.5 mL
Price (USD)
Price: 361.00
Online price: 341.65
Your price:
Availability
-
Quantity
Catalog NumberUnit SizePrice (USD)AvailabilityQuantity
S11223
also known as S-11223
1 mg
Price: 310.00
Online price: 294.65
Your price:
-
S323540.5 mL
Price: 361.00
Online price: 341.65
Your price:
-
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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

Conjugate
Alexa Fluor 488
Quantity
1 mg
Excitation/Emission
495/519 nm
Shipping Condition
Room Temperature
Form
Solid
Product Line
Alexa Fluor™
Product Type
Streptavidin Conjugate (fluorescent)
Label or Dye
Alexa Fluor

Contents & Storage

Store in freezer (-5°C to -30°C) and protect from light.

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