The ED50 was determined by the dose - dependent stimulation of the proliferation of thymidine uptake by murine MC - 9 cells is < 10 ng/mL, corresponding to a specific activity of >1.0 x 105 units/mg.
Reinheit
< 98 % by SDS-PAGE gel and HPLC analyses.
Endotoxin-Niveau
Endotoxin level is less than 0.1 ng per μg (1 EU/μg).
IL-3 beta
Spezies: Human
Wirt: Escherichia coli (E. coli)
Recombinant
> 98 % pure
Active
Beschränkungen
Nur für Forschungszwecke einsetzbar
Format
Lyophilized
Handhabung
As with any protein, exposing IL-3 beta recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.
Lagerung
-20 °C
Informationen zur Lagerung
The recombinant protein is stable for at least 2 years from date of receipt at -20 °C. Reconstituted IL-3 beta is stable for at least 3 months when stored in working aliquots with a carrier protein at -20 °C.
IL-3 is a hematopoietic growth factor that promotes the survival, differentiation and proliferation of committed progenitor cells of the megakaryocyte, granulocyte-macrophage, erythroid, eosinophil, basophil and mast cell lineages. Produced by T cells, mast cells and eosinophils, IL-3 enhances thrombopoieses, phagocytosis, and antibody-mediated cellular cytotoxicity. Its ability to activate monocytes suggests that IL-3 may have additional immunoregulatory roles. Many of the IL-3 activities depend upon co-stimulation with other cytokines. IL-3 is species-specific, variably glycosylated cytokine. Recombinant rat IL-3beta is a 16.3 kDa globular protein containing 144 amino acid residues.