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  2. Cytokines and Growth Factors
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  4. IL-13
  5. IL-13 Protein, Human (HEK293, His)

IL-13 Protein, Human (HEK293, His)

Cat. No.: HY-P70568
COA Handling Instructions

IL-13 Protein, Human (HEK293, His) is a cytokine which affects the morphology, growth, and surface antigen expression and phenotype of monocytes and elicits B cell proliferation. IL-13 Protein, Human (HEK293, His) is a recombinant human interleukin-13 (rhIL-13) expressed in HEK 293 cells with a His tag.

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

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  • Biological Activity

  • Technical Parameters

  • Properties

  • Documentation

  • References

Description

IL-13 Protein, Human (HEK293, His) is a cytokine which affects the morphology, growth, and surface antigen expression and phenotype of monocytes and elicits B cell proliferation. IL-13 Protein, Human (HEK293, His) is a recombinant human interleukin-13 (rhIL-13) expressed in HEK 293 cells with a His tag.

Background

Interleukin-13 is a cytokine which is secreted by activated T lymphocytes and primarily impacts monocytes, macrophages, and B cells. The circular dichroism spectrum confirms that interleukin-13 belongs to the alpha-helical family of cytokines. Interleukin- 13 affects the morphology, growth, and surface antigen expression and phenotype of monocytes and elicits B cell proliferation, Ig class switching to IgE synthesis, and enhanced production of IgG4 and IgM. In human macrophages and monocytes,hIL-13 has been shown to inhibit HIV replication. Human IL-13 also inhibits proinflammatory cyto-kines induced by LPS exposure, indicating poten-tial therapeutic applicationsas an anti-inflammatory agent[1].

Biological Activity

The cell proliferation assay using TF-1 human erythroleukemic cells has an ED50 value of 1.5-8.61 ng/mL.

  • Measured in a cell proliferation assay using TF-1 human erythroleukemic cell.The ED50 for this effect is 6.27 ng/mL, corresponding to a specific activity is 1.59×105 U/mg.
Species

Human

Source

HEK293

Tag

C-6*His

Accession

AAH96139 (G35-N146)

Gene ID
Synonyms
Interleukin-13; IL-13
AA Sequence

GPVPPSTALRELIEELVNITQNQKAPLCNGSMVWSINLTAGMYCAALESLINVSGCSAIEKTQRMLSGFCPHKVSAGQFSSLHVRDTKIEVAQFVKDLLLHLKKLFREGRFN

Molecular Weight

Approximately 17-30 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

<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 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
References

IL-13 Protein, Human (HEK293, 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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IL-13 Protein, Human (HEK293, His)
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HY-P70568
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