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  4. Streptavidin Protein

Streptavidin Protein

Cat. No.: HY-P72778
COA Handling Instructions

Streptavidin Protein is the recombinant Streptavidin, expressed by E. coli , with tag Free labeled tag. ,

For research use only. We do not sell to patients.

Surface Plasmon Resonance (SPR) Assay Service   Protein Expression Service

Size Price Stock Quantity
1 mg $140 In-stock
5 mg $390 In-stock
> 5 mg   Get quote  
or Bulk Inquiry

* Please select Quantity before adding items.

Top Publications Citing Use of Products

  • Biological Activity

  • Technical Parameters

  • Properties

  • Documentation

Description

Streptavidin Protein is the recombinant Streptavidin, expressed by E. coli , with tag Free labeled tag. ,
Biological Activity

>15 U/mg protein, 1 U is defined as the quantity of protein that binds 1 microgramme.
Species

Others
Source

E. coli
Tag

Tag Free
Accession

/
Gene ID

/
Synonyms
Streptavidin
AA Sequence

/

Molecular Weight

Approximately 16 kDa
Purity

Greater than 95% as determined by reducing SDS-PAGE.
Appearance

Lyophilized powder
Formulation

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.
Endotoxin Level

/
Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).
Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
Shipping

Room temperature in continental US; may vary elsewhere.
Documentation

COA (219 KB)

Handling Instructions (2659 KB)

Streptavidin Protein Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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