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Enterotoxin type E Protein, S. aureus (His)

Cat. No.: HY-P72058A
Data Sheet Handling Instructions Technical Support

ENTE Proteinas are staphylococcal enterotoxins that activate the host immune system by binding to major histocompatibility complex class II and T-cell receptor (TCR) molecules. This interaction forms a ternary complex that activates T lymphocytes and induces the systemic release of proinflammatory cytokines. Enterotoxin type E Protein, S. aureus (His) is the recombinant Staphylococcus aureus-derived ENTE protein, expressed by E. coli , with N-6*His labeled tag.

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

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Free Sample   Apply now
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10 μg USD 95 In-stock
50 μg USD 265 In-stock
100 μg USD 450 In-stock
500 μg USD 1200 In-stock
1 mg USD 1750 In-stock
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  • Biological Activity

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Description

ENTE Proteinas are staphylococcal enterotoxins that activate the host immune system by binding to major histocompatibility complex class II and T-cell receptor (TCR) molecules. This interaction forms a ternary complex that activates T lymphocytes and induces the systemic release of proinflammatory cytokines. Enterotoxin type E Protein, S. aureus (His) is the recombinant Staphylococcus aureus-derived ENTE protein, expressed by E. coli , with N-6*His labeled tag.

Background

ENTE, a staphylococcal enterotoxin, plays a pivotal role in activating the host immune system by binding as unprocessed molecules to major histocompatibility complex class II and T-cell receptor (TCR) molecules. This interaction results in the formation of a ternary complex, which, in turn, activates a significant number of T-lymphocytes, triggering a systemic release of pro-inflammatory cytokines. Beyond its immunomodulatory functions, ENTE is implicated in the development of staphylococcal food poisoning syndrome, a condition characterized by symptoms such as intoxication, fever, and gastrointestinal distress. These activities highlight the impact of ENTE on both immune response pathways and pathological outcomes.

Species

Staphylococcus aureus

Source

E. coli

Tag

N-6*His

Accession

P12993 (S28-T257)

Gene ID

/

Molecular Construction
N-term
6*His
ENTE (S28-T257)
Accession # P12993
C-term
Synonyms
EEnterotoxin type E; SEE; entE
AA Sequence

SEEINEKDLRKKSELQRNALSNLRQIYYYNEKAITENKESDDQFLENTLLFKGFFTGHPWYNDLLVDLGSKDATNKYKGKKVDLYGAYYGYQCAGGTPNKTACMYGGVTLHDNNRLTEEKKVPINLWIDGKQTTVPIDKVKTSKKEVTVQELDLQARHYLHGKFGLYNSDSFGGKVQRGLIVFHSSEGSTVSYDLFDAQGQYPDTLLRIYRDNKTINSENLHIDLYLYTT

Molecular Weight

Approximately 27 kDa

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

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of 50 mM Tris-HCL, 300 mM NaCl, pH 7.4, 5% trehalose, 5% mannitol and 0.01% Tween 80.

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. For lower concentration, please reconstitute in 50 mM Tris-HCL,300 mM NaCl, pH 7.4 buffer.

Storage & Stability

Stored at -20°C for 2 years from date of receipt. 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

Enterotoxin type E Protein, S. aureus (His) Related Classifications

  • 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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Product Name:
Enterotoxin type E Protein, S. aureus (His)
Cat. No.:
HY-P72058A
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