Recombinant human IL4 protein (ab83686)



  • NatureRecombinant
  • SourceHEK 293 cells
  • Amino Acid Sequence
    • SpeciesHuman


Our Abpromise guarantee covers the use of ab83686 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Biological activityActivity: The ED50 of ab83686 is typically 0.02 - 0.2 ng/ml as measured in a cell proliferation assay using the human growth factor-dependent TF1 cell line.
  • Applications

    Functional Studies


  • Purity> 95 % SDS-PAGE.

  • FormLyophilised
  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. After reconstitution store at -20ºC. Avoid freeze / thaw cycles.

    Preservative: None
    Constituents: 10% Trehalose, 1% Human serum albumin, PBS

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

  • ReconstitutionIt is recommended that 0.5 ml of sterile phosphate-buffered saline be added to the vial. Following reconstitution short-term storage at 4°C is recommended, with longer-term storage in aliquots at -18 to -20°C. Repeated freeze thawing is not recommended.

General Info

  • Alternative names
    • B cell growth factor 1
    • B cell IgG differentiation factor
    • B Cell Stimulatory Factor 1
    • B-cell stimulatory factor 1
    • BCGF 1
    • BCGF1
    • Binetrakin
    • BSF-1
    • BSF1
    • IGG1 induction factor
    • IL 4
    • IL-4
    • IL4
    • IL4_HUMAN
    • Il4e12
    • Interleukin 4
    • Interleukin 4 variant 2
    • Interleukin 4, isoform 1
    • Interleukin-4
    • Lymphocyte stimulatory factor 1
    • MGC79402
    • Pitrakinra
    see all
  • FunctionParticipates in at least several B-cell activation processes as well as of other cell types. It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both secretion and cell surface expression of IgE and IgG1. It also regulates the expression of the low affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes.
  • Involvement in diseaseGenetic variations in IL4 may be a cause of susceptibility to ischemic stroke (ISCHSTR) [MIM:601367]; also known as cerebrovascular accident or cerebral infarction. A stroke is an acute neurologic event leading to death of neural tissue of the brain and resulting in loss of motor, sensory and/or cognitive function. Ischemic strokes, resulting from vascular occlusion, is considered to be a highly complex disease consisting of a group of heterogeneous disorders with multiple genetic and environmental risk factors.
  • Sequence similaritiesBelongs to the IL-4/IL-13 family.
  • Cellular localizationSecreted.
  • Information by UniProt

Recombinant human IL4 protein images

  • Densitometry of protein isoforms visualised by 2-DE. The triangle indicates the theoretical MW and pI of the protein.
  • 1D SDS-PAGE of ab83686 before and after treatment with glycosidases to remove oligosaccharides. A drop in the observed MW after treatment indicates the presence of glycosylation.
    Lane 1: ab83686
    Lane 2: ab83686 treated with PNGase F to remove potential N-linked glycans
    Lane 3: ab83686 treated with a glycosidase cocktail to remove potential N- and O-linked glycans. 10 µg protein loaded per lane; Deep Purple™ stained.
    Additional bands in lane 2 and lane 3 are glycosidase enzymes.

References for Recombinant human IL4 protein (ab83686)

ab83686 has not yet been referenced specifically in any publications.

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Thank you for contacting us. The ED50 is an expression of activity at 50% of its maximum response. Specific activity is just another way of conveying the activity of the protein. To calculate a specific activity, divide 1 x 106 by the ED50 in ng/ml...

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