Fully biologically active when compared to standard. The ED50 determined by a cell proliferation assay using human IL-20Ralpha and human IL-20Rbeta co-transfected murine BaF3 pro-B cells is less than 0.6 ng/ml, corresponding to a specific activity of >, 1.7 × 106 IU/mg.
Reinheit
> 95 % by SDS-PAGE and HPLC analyses.
Endotoxin-Niveau
Level Less than 1EU/µg of rHuIL-20 as determined by LAL method
IL20
Spezies: Ratte
Wirt: Escherichia coli (E. coli)
Recombinant
> 97 %
WB, SDS, Imm, PC
Beschränkungen
Nur für Forschungszwecke einsetzbar
Format
Lyophilized
Rekonstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at < -20 °C. Further dilutions should be made in appropriate buffered solutions.
IL-20 is a member of the IL-10 family of regulatory cytokines which includes IL-10, IL-19, IL-20, IL-22, IL-24 and IL-26. Members of this family share partial homology in their amino acid sequences but they are dissimilar in their biological functions. IL-20 is a hematopoietic growth factor capable of stimulating colony formation by CD34+ multipotential progenitors, but not by other progenitor cells. IL-20 signals through a receptor system composed of type I IL-20R-ª and type II IL-20R-beta. Over-expression of IL-20 in keratinocytes expressing both receptor subunits has been implicated in the induction of inflammatory skin disease. Synonym: Interleukin-20 (IL-20), Human. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.
Molekulargewicht
Approximately 17.6 kDa, a single non-glycosylated polypeptide chain containing 153 amino acids.