Human IL-21 Protein (IL2-HE021)

  • Express System: E.coli
  • Product Tag: No Tag
  • Purity: > 95% as determined by Tris-Bis PAGE
  • Activity: Immobilized Human IL-21, No Tag at 1_g/ml (100_l/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.
  • Exact Sequence: Gln32-Ser162

Catalog: IL2-HE021

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Product Description Recombinant Human IL-21 Protein is expressed from E.coli without tag.It contains Gln32-Ser162.
Product Category Recombinant Protein
Target IL-21
Synonyms Interleukin-21; IL-21; Za11; CVID11
Gene/Protein ID Q9HBE4-1
Species Human
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 1_g/ml (100_l/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.
Product Tag No Tag
Express System E.coli
Purity > 95% as determined by Tris-Bis PAGE
Endotoxin Less than 1EU per _g by the LAL method.
Form Lyophilized
Shipping Shipped at ambient temperature.
Formulation Lyophilized from 0.22_m filtered solution in 20mM NaAc, 150mM NaCl (pH 5.5). Normally 5% trehalose is added as protectant before lyophilization.
Reconstitution Centrifuge tubes before opening. Reconstituting to a concentration more than 100 _g/ml is recommended (usually we use 1mg/ml solution for lyophilization). Dissolve the lyophilized protein in 20mM NaAc, 150mM NaCl (pH 5.5).
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.
Immobilized Human IL-21, No Tag at 1_g/ml (100_l/well) on the plate. Dose response curve for Human IL-21R, hFc Tag with the EC50 of 63.6ng/ml determined by ELISA.
Human IL-21 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.

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