Recombinant Streptavidin Protein
Streptavidin is a tetrameric protein purified from the bacterium Streptomyces avidinii, and exhibits high binding affinity for biotin. Able to bind one molecule of biotin with each subunit. Streptavidin (PI=6.0-7.5) has lower level of non-specific binding to various biological components at physiological pH than avidin (PI=7.4), resulting from its isoelectric point (PI) . Streptavidin is useful in affinity chromatography, ELISA, immunohistochemistry and Western Blotting.
Product Specifications
Reactivity
Bacteria
Conjugation
Unconjugated
Tag
Native
Endotoxin
1.0 EU per μg
Purity
95%
Form
Powder
Molecular Weight
13.8 kDa
Storage Conditions
-20°C
Notes
For research use only.
Applications Notes
This protein carries no "tag". The protein has a calculated MW of 13.8 kDa. The protein migrates as 12 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) .
Preservative
NaCl, pH 7.4
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