Streptavidin Protein-PE

製品番号/仕様
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数量
STN-NP119-100ug
$65.00
In Stock - Delivery in 2-3 business days
STN-NP119-500ug (250ug X 2)
$185.00
In Stock - Delivery in 2-3 business days
STN-NP119
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Synonyms

Streptavidin, SA

Source

Streptavidin-PE (STN-NP119) is expressed from E. coli cells.

Molecular Characterization

This protein carries no "tag".

The protein has a calculated MW of 13.8 kDa.

Conjugate

PE

Excitation Wavelength: 488 nm / 561 nm

Emission Wavelength: 575 nm

Application

Flow Cytometry

We also carry another Premium Grade Streptavidin Protein-PE (STN-NP117), which is produced under more rigorous quality control system that incorporates a comprehensive set of tests including sterility and endotoxin tests, and its performance is carefully validated and tested for compatibility for cell culture use or any other applications in the early preclinical stage.

Formulation

Lyophilized from 0.22 μm filtered solution in PBS, 1.5% BSA, 0.03% ProClin300, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

Reconstitution

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Shipping and Storage

This product is shipped at ambient temperature.

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please protect from light and avoid repeated freeze-thaw cycles.

This product is stable after storage at:
  • -20°C to -70°C for 24 months in lyophilized state;
  • -20°C for 6 months after reconstitution;
  • 2-8 °C for 6 months under sterile conditions after reconstitution.

バックグランド

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.