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Creative BioMart - Model IL4-504H - Recombinant Human
Interleukin-4, is a cytokine that induces differentiation of naive helper T cells (Th0 cells to Th2 cells). In the presence of IL-4 and IL-13, cytokines that are produced in a Th-2 type response, particularly during allergy and parasitic infections, macrophages become differentially activated, And this cytokine is a ligand for interleukin 4 receptor. The interleukin 4 receptor also binds to IL13, which may contribute to many overlapping functions of this cytokine and IL13. STAT6, a signal transducer and activator of transcription, has been shown to play a central role in mediating the immune regulatory signal of this cytokine. Recently, researcher found that the cytokine IL-4 plays a key role in development of innate CD8+ T cells in the thymus of several gene-deficient mouse strains, including Itk, KLF2, CBP and Id3, without previous exposure to antigen.
- Source : HEK293
- Species : Human
- Predicted N Terminal : His25
- Form : Lyophilized from 0.22 μm filtered solution in 20 mM MES, 200 mM NaCl, pH6.0. Normally Mannitol or Trehalose are added as protectants. before lyophilization.
- Bio-activity : The bio-activity was determined by dose-dependent stimulation of the proliferation of TF-1 cells. The ED50<0.2ng l, corresponding to a specific activity of>5X10^6 Unit/mg.
- Molecular Mass:rhIL-4 contains no "tag" and has a calculated MW of 14.9 kDa. DTT-reduced protein migrates as 15 and 19 kDa protein due to glycosylation.
- Endotoxin:Less than 1.0 EU per μg of the or rhIL-4 by the LAL method.
- Purity:>95% purity as determined by SDS-PAGE of reduced rhIL-4.
- Storage:Avoid repeated freeze-thaw cycles. No activity loss was observed after storage at: In lyophilized state for 1 year (4 centigrade-8 centigrade); After reconstitution under sterile conditions for 1 month (4 centigrade-8 centigrade) or 3 months (-20 centigrade to -70 centigrade).