IL4 (Interleukin 4) CTS™ Recombinant Human Protein

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Recombinant IL4 is a bioactive protein intended for use in cell culture applications. IL4 promotes the proliferation and differentiation of activated B cells. In addition, IL4 up-regulates class II MHC antigen expression and IgE receptors. ED50 = 0.05 to 0.4 ng⁄mL (Specific Activity: 2.0 x 10^7 to 2.5 x 10^6 units⁄mg). The biological activity is determined by measuring the dose-dependent proliferation of human TF-1 cells. A concentration range of 0.1 to 10.0 ng⁄mL is effective for most in vitro applications.
For Research Use Only. Not for use in diagnostic procedures.


Activity: 0.132 ng/ml
Bioassay: Proliferation of TF1 cells
Endotoxin Level: < 0.1 ng/µg
Product Line: CTS™, Gibco®
Purity or Quality Grade: Carrier-Free
Reactivity: Human
Shipping Condition: Wet Ice
Expression System: E. coli
Protein Family: Cytokines & Receptors
Protein Form: Full Length, Recombinant, Ligand
Protein Subtype: Interleukins
Research Category: Clinical Research, Stem Cell Research, Immunology, Inflammation
Species: Human
Validated Application: Cell Culture
Molecular Weight: 14.9 kDa
Purification Method: Gel-Purified
Purity: 95 %
Gene Alias: IL-4 (Interleukin 4)

Contents & storage

Lyophilized protein can be stored at 2-8°C dessicated. Once reconstituted, store in aliquots at ≤20°C. Avoid multiple freeze⁄thaw cycles.