S1638
Streptavidin−Agarose from Streptomyces avidinii
buffered aqueous suspension
Synonym(s):
streptavidin agarose beads, streptavidin agarose resin
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form
buffered aqueous suspension
Quality Level
extent of labeling
≥1 mg per mL
technique(s)
affinity chromatography: suitable
matrix
4% beaded agarose
matrix activation
cyanogen bromide
matrix attachment
amino
matrix spacer
7 atoms
capacity
≥15 μg/mL binding capacity (biotin)
storage temp.
2-8°C
Application
Streptavidin−agarose from Streptomyces avidinii has been used:
- to pull down biotinylated cell surface proteins during the quantification of plasma membrane transforming growth factor β (TGFβ) receptor II (TβRII) and Tβ
- RII internalization
- in biotinylated miRNA pull-down assay; as secondary antibodies in immunoprecipitation
Streptavidin-agarose is used in protein chromatography, affinity chromatography, and recombinant protein expression and analysis. Streptavidin-agarose has been used to study the oriented immobilization of the tobacco etch virus protease for the cleavage of fusion proteins. Streptavidin-agarose has also been used to develop a method for screening triplex DNA binders from natural plant extracts.
Used for the purification of biotin containing proteins or DNA binding proteins
Biochem/physiol Actions
Streptavidin is a homotetrameric protein, isolated from Streptomyces avidinii, which, like avidin, has a high affinity for biotin. Streptavidin is slightly anionic (pI ~ 5-6) and non-glycosylated. These properties contribute to its relatively low non-specific binding compared to egg white avidin. Streptavidin is also more resistant than avidin to dissociation into subunits by guanidinium chloride. Streptavidin-agarose can be used to immobilize or isolate various biotinylated macromolecules and complexes (proteins, antibodies, lectins, nucleic acids, receptors, and ligands). The inherent high-affinity streptavidin-biotin interaction requires harsh conditions to release biotinylated macromolecules. This feature makes streptavidin-agarose useful in a variety of affinity purification applications.
Physical form
Suspension in 0.01 M sodium phosphate, pH 7.2, containing 0.05 M NaCl and 0.02% sodium azide
Storage Class Code
10 - Combustible liquids
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Pull-down assays, reagents, and protocols for investigating in vitro protein-protein interactions using affinity or GST pull-down, tandem affinity purification (TAP), and co-immunoprecipitation methods.
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