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Shiga toxin 2B Protein, E. coli (His)

Cat. No.: HY-P73650
COA Handling Instructions

Shiga toxin 2B Proteinas, specifically its B subunit, binds the holotoxin to target cell receptors, such as globotriaosylceramide (Gb3) on human intestinal microvilli. Its capability to recognize and engage with these receptors underscores its pivotal role in initiating the holotoxin's interaction with the target cell surface, setting the stage for subsequent cellular responses and internalization processes. Shiga toxin 2B Protein, E. coli (His) is the recombinant E. coli-derived Shiga toxin 2B protein, expressed by E. coli , with N-His labeled tag. The total length of Shiga toxin 2B Protein, E. coli (His) is 89 a.a., with molecular weight of ~16 kDa.

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

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  • Biological Activity

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Description

Shiga toxin 2B Proteinas, specifically its B subunit, binds the holotoxin to target cell receptors, such as globotriaosylceramide (Gb3) on human intestinal microvilli. Its capability to recognize and engage with these receptors underscores its pivotal role in initiating the holotoxin's interaction with the target cell surface, setting the stage for subsequent cellular responses and internalization processes. Shiga toxin 2B Protein, E. coli (His) is the recombinant E. coli-derived Shiga toxin 2B protein, expressed by E. coli , with N-His labeled tag. The total length of Shiga toxin 2B Protein, E. coli (His) is 89 a.a., with molecular weight of ~16 kDa.

Background

The Shiga toxin 2B protein, specifically its B subunit, assumes the critical role of binding the holotoxin to specific receptors on the surface of target cells. Notably, this binding interaction is directed towards receptors such as globotriaosylceramide (Gb3), particularly located on human intestinal microvilli. The B subunit's capability to recognize and engage with these specific receptors underscores its pivotal function in facilitating the initial stages of the holotoxin's interaction with the target cell surface, setting the stage for subsequent cellular responses and internalization processes.

Species

E.coli

Source

E. coli

Tag

N-His

Accession

Q93EY4 (M1-D89)

Gene ID

/

Molecular Construction
N-term
His
Stx2B (M1-D89)
Accession # Q93EY4
C-term
Synonyms
Shiga toxin 2 B subunit; Stx2 holotoxin B subunit; stx2B; stx2dB
Molecular Weight

Approximately 16 kDa

Purity

Greater than 90% as determined by reducing SDS-PAGE.

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

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

Shiga toxin 2B Protein, E. coli (His) 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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Shiga toxin 2B Protein, E. coli (His)
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HY-P73650
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