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| Catalog No. | Product Name | Size | List Price (US$) | Quantity |
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Conditions of optimal recombinant Human IL-21 Protein performance should be determined experimentally by the investigator.
Price/availability/specifications subject to change without notice. Unless otherwise indicated, our catalog and customized products are for research use only and not intended for human or animal diagnostic or therapeutic use.
Phone: 1-617-401-8149
Fax: 1-617-606-5019
Email: message@sydlabs.com
Or leave a message with a formal purchase
order (PO) Or credit card.
BP005786: Human IL-21 Protein with No Tag
Source: The recombinant Human IL-21 Protein, (amino acids Gln32-Ser162) fused with No Tag, was produced in E.coli cells.
Molecular Weight:The recombinant Human IL-21 Protein has a predicted MW of 15.4 kDa same as Tris-Bis PAGE result.
Activity: Immobilized recombinant Human IL-21, No tag at 2 ug/ml (100 ul/well) on the plate. Dose response curve for the recombinant Human IL-21R, hFc tag with the EC50 of 42.3 ng/ml determined by ELISA.
Purity: >95% by SEC-HPLC and SDS-PAGE under reducing conditions.
Endotoxin Level: Less than 1 EU per ug of protein as determined by LAL method.
Formulation: Lyophilized from 0.22 um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution: It is recommended to reconstitute the lyophilized recombinant Human IL-21 Protein in sterile H2O to a protein concentration not less than 100 ug/ml. Centrifuge the tube before opening.
Shipping: The recombinant Human IL-21 Protein is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 week, 2 to 8°C under sterile conditions after reconstitution.
6 months, -20 to -70°C under sterile conditions after reconstitution.
Syd Labs provides the following IL-21 Protein :
Biotinylated Human IL-21 Protein
Biotinylated Mouse IL-21 Protein
Cynomolgus IL-21R Protein
Human IL-21 Protein
Human IL-21R Protein
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