Recombinant Human Interleukin-5 (IL5) (Active)

• Product Name Alternative:

  Interleukin-5; IL-5; B-cell differentiation factor I; Eosinophil differentiation factor; T-cell replacing factor; TRF; IL5

• Abbreviation:

  Recombinant Human IL5 protein (Active)

• Gene Name:

  IL5

• UniProt:

  P05113

• Expression Region:

  20-134aa

• Organism:

  Homo sapiens (Human)

• Target Sequence:

  IPTEIPTSALVKETLALLSTHRTLLIANETLRIPVPVHKNHQLCTEEIFQGIGTLESQTVQGGTVERLFKNLSLIKKYIDGQKKKCGEERRRVNQFLDYLQEFLGVMNTEWIIES

• Tag:

  C-terminal 6xHis-tagged

• Type:

  Active Protein & In Stock Protein

• Source:

  Mammalian cell

• Field of Research:

  Immunology

• Relevance:

  IL-5 is expressed in eosinophils, NK cells, TC2 CD8+ T cells, mast cells, CD45+ CD4+ T cells, gamma delta T cells and IL-1 beta activated endothelial cells. IL-5 acts as a growth and differentiation factor for both B cells and eosinophils. Relative to B cells, IL-5 appears to induce the differentiation of activated conventional B-2 cells into Ig-secreting cells. In addition, it induces the growth of B-1 progenitors as well as IgM production by B-1 cells.IL-5 appears to perform a number of functions on eosinophils. These include the down modulation of Mac-1, the upregulation of receptors for IgA and IgG, the stimulation of lipid mediator (leukotriene C4 and PAF) secretion and the induction of granule release.IL-5 also promotes the growth and differentiation of eosinophils.

• Endotoxin:

  Less than 1.0 EU/μg as determined by LAL method.

• Purity:

  Greater than 95% as determined by SDS-PAGE.

• Activity:

  Yes

• Bioactivity:

  The ED50 as determined in a cell proliferation assay using TF‑1 human erythroleukemic cells is 0.1-0.5 ng/ml.

• Form:

  Lyophilized powder

• Buffer:

  Lyophilized from a 0.2 μm filtered 1xPBS, pH 7.4

• Reconstitution:

  We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

• Function:

  Factor that induces terminal differentiation of late-developing B-cells to immunoglobulin secreting cells.

• Molecular Weight:

  14.2 kDa

• Storage Conditions:

  The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.

• Protein Length:

  Full Length of Mature Protein