Streptavidin Protein-Alexa Fluor™ 647 (HPLC verified)
Streptavidin Protein-Alexa Fluor 647 (STN-NA119) is expressed from E. coli cells.
Product Specifications
Background
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.
Specifications
This protein carries no "tag". The protein has a calculated MW of 13.8 kDa. The protein migrates as 12-15 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) .
Host
E. coli
Target
Streptavidin
Conjugation
AF647 Labeled
Tag
Native
Source
Streptomyces avidinii
Stability
● -20°C to -70°C for 12 months in lyophilized state; ● -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Purity
95%
Format
Powder
Buffer
PBS, pH7.4
Additives
Trehalose
Molecular Weight
13.8 kDa
Shipping Conditions
RT
Storage Conditions
-20°C, aviod light
Package Size
100ug*1
Product Datasheet
Https://www.acrobiosystems.com/static/main/products/pdf/ds/STN-NA119.pdf
Species
Streptomyces avidinii
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