Login

Forgot your password?
New User?
Remember me
banner banner

You are here:Home » Growth Factors, Cytokines » Growth Factors-Interleukin » Interleukin 21, Recombinant, Human (IL-21)

Interleukin 21, Recombinant, Human (IL-21)

Pricing

  For pricing information, USA customers sign in.
  Outside USA? Please contact your distributor for pricing.

Specifications

Interleukin-21 (IL-21), expressed by activated CD4(+) T cells, is the newest member of the common gamma-chain family of cytokines, which includes IL-2, IL-4, IL-7, IL-9, IL-13, and IL-15. Its private receptor, IL-21R, is expressed on T, B, and NK cells. Within the B cell lineage, IL-21 regulates IgG1 production and cooperates with IL-4 for the production of multiple Ab classes in vivo. IL-21R has been shown to activate the Janus kinase/signal transducers and activators of transcription signaling pathway upon ligand binding. Initial studies have demonstrated that IL-21 has pleiotropic effects on the proliferation, differentiation, and effector functions of B, T, natural killer, and dendritic cells.
Catalog #I8442-15B
Endotoxin <0.01ng/ug or <0.1EU/ug as per LAL
AA SequenceMQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS
Biological Activity rHuIL-2 is fully biologically active when compared to standard. The ED50 as determined by the dose-dependent stimulation of murine CTLL-2 cells is less then 0.0645ng/ml, corresponding to a Specific Activity of 16.9 MIU/mg
Storage and StabilityLyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile ddH2O, aliquot and store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight15.5kD
SourceRecombinant, human, E. coli
Purity95% as determined by RP-HPLC; Reducing and non-reducing SDS-PAGE.
FormSupplied as a lyophilized powder. Reconstitute with sterile dH2O PBS to 0.1-1mg/ml, which can be further diluted into other aqueous solutions.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


External Links