Human IL-21 Protein (LTP11122)

Product Name
Human IL-21 Protein (LTP11122)
Catalog Number
LTP11122
Quantity
100ug
Price
$226 In stock
Background
Interleukin-21 (IL-21), produced predominantly by CD4 T cells and natural killer T (NKT) cells, is a newly discovered member of the common ?-chain family of cytokines. It has been implicated in many immunological processes and has been linked to autoimmune diseases, allergies and other inflammatory diseases.
Description
Recombinant Human IL-21 Protein is expressed from E.coli without tag. It contains Gln32-Ser162.
Target
IL-21
Species
Human
Gene/Protein ID
Q9HBE4-1
Exact Sequence
Gln32-Ser162
Molecular Weight
The protein has a predicted MW of 15.4 kDa same as Tris-Bis PAGE result.
Activity
Immobilized Human IL-21, No Tag at 1ug/ml (100ul/well) on the plate. Dose response curve for Human IL-21R, hFc Tag with the EC50 of 63.6ng/ml determined by ELISA. See testing image for detail.
Tag
No Tag
Express System
E.coli
Purity
> 95% as determined by Tris-Bis PAGE; > 95% as determined by HPLC
Endotoxin
Less than 1EU per ug by the LAL method.
Formulation
Lyophilized from 0.22 um filtered solution in 20mM NaAc, 150mM NaCl (pH 5.5). Normally 8% trehalose is added as a protectant before lyophilization.
Stability and Storage

Reconstituted protein stable at -80 C for 12 months, 4 C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

Shipping
Shipped at ambient temperature.
Reconstitution

Centrifuge tubes before opening. Reconstituting to a concentration of more than 100 ug/ml is recommended. Dissolve the lyophilized protein in 20mM NaAc, 150mM NaCl (pH 5.5).

Image
Human IL-21 Protein (LTP11122)
  • 5 Units in Stock
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