Streptavidin Protein-Alexa Fluor™ 555 (HPLC verified)

DESCRIPTION

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.

DETAILS

Tag: Native
Host: E. coli
Size: 100ug
Buffer: PBS, pH7.4
Format: Powder
Purity: 95%
Source: Streptavidin Protein-Alexa Fluor 555 (STN-NA115) is expressed from E. coli cells.
Storage: -20℃, aviod light
Category: Fluorescent labeled protein
Molecule: Streptavidin
Conjugate: AF555 Labeled
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.
Package Size: 100ug*1
Characteristics: This protein carries no "tag". The protein has a calculated MW of 13.8 kDa. The protein migrates as 15 kDa under reducing (R) condition (SDS-PAGE).
Molecular Weight: 13.8 kDa
Shipping Condition: RT
Species Reactivity: Streptomyces avidinii
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