1. Recombinant Proteins
  2. IL-4 Protein, Human (CHO)

IL-4 Protein, Human (CHO)

Cat. No.: HY-P7042
Handling Instructions

IL-4 Protein, Human (CHO) is a CHO cell derived, potent lymphoid cell growth factor, which stimulates the growth and survivability of B-cells and T-cells.

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

Protein Expression Service

Recombinant Proteins-MedChemExpress
Size Price Stock Quantity
10 μg $140 In-stock
Estimated Time of Arrival: December 31
50 μg $440 In-stock
Estimated Time of Arrival: December 31
100 μg $640 Get quote
250 μg   Get quote  

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  • Technical Parameters

  • Properties

  • Documentation

rHuIL-4; BSF-1; Binetrakin; Lymphocyte stimulatory factor 1; Pitrakinra





P05112 (H25-S153)

Gene ID


Molecular Weight

Approximately 15 kDa

AA Sequence


Biological Activity
The ED50 is <0.25 ng/mL as measured by TF-1 human erythroleukemic cells, corresponding to a specific activity of >4 × 106 units/mg.

Lyophilized powder.


Lyophilized after extensive dialysis against PBS.

Endotoxin Level

<0.2 EU/μg, determined by LAL method.


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

Storage & Stability

Stored at -20°C. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer. It is recommended to freeze aliquots at -20°C or -80°C for extended storage.


Room temperature in continental US; may vary elsewhere.


Interleukin-4 (IL-4) is a cytokine that plays an important role in regulating inflammation and immune responses. It induces the differentiation of naïve helper T cells to Th2 cells. This cytokine binds the IL-4 receptor that also binds another cytokine interleukin 13 (IL-13), which may explain the overlapping functions of IL-4 and IL-13. IL-4, originally designated as B-cell growth factor-1 (BSFl), is described in the supernatant of activated EL-4 thymoma cells as a factor that can co-stimulate B-cells activated with submitogenic concentrations of anti-IgM[1].

  • Molarity Calculator

  • Dilution Calculator

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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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

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IL-4 Protein, Human (CHO)
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