Description

  • Product name

    Recombinant cow IL-4 protein
    See all IL-4 proteins and peptides
  • Biological activity

    The biological activity of ab87679 was measured in a cell proliferation assay using the human TF-1 cell line. The ED50 for this effect is typically 1.5 - 2 ng/mL.

  • Purity

    > 95 % SDS-PAGE.
    ab87679 was purified by Ion-exchange chromatography.
  • Expression system

    Yeast
  • Accession

  • Protein length

    Full length protein
  • Animal free

    No
  • Nature

    Recombinant
    • Species

      Cow
    • Sequence

      GHKCDITLAEIIKTLNILTTRKNSCMELPVADVFAAPKNTTEKETFCRVG IELRRIYRSHTCLNKFLGGLDRNLNSLASKTCSVNEAKTSTSTLKDLLER LKTIMKEKYSKC
    • Predicted molecular weight

      13 kDa
    • Amino acids

      24 to 135
    • Additional sequence information

      This product is the mature full length protein from aa 24 to 135. The signal peptide is not included.

Specifications

Our Abpromise guarantee covers the use of ab87679 in the following tested applications.

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

  • Applications

    Functional Studies

    SDS-PAGE

  • Form

    Lyophilised
  • Additional notes

    ab87679 was produced in yeast and therefore does not have endotoxin, is naturally folded, and post-translationally modified.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid repeated freeze / thaw cycles.

    Constituents: 90% PBS, 10% Trehalose

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

  • Reconstitution
    Reconstitute with sterile phosphate-buffered saline containing at least 0.1% carrier protein.

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
  • Function

    Participates 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 disease

    Genetic 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 similarities

    Belongs to the IL-4/IL-13 family.
  • Cellular localization

    Secreted.
  • Information by UniProt

References

ab87679 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

Answer

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. Specific Activity (Units/mg) = 1 x 106 / ED50 (ng/ml). I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.  

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