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Conditions of optimal recombinant Biotinylated 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.
BP004208: Biotinylated Human IL-21 Protein with the N-His-Avi Tag
Source: The recombinant Biotinylated Human IL-21 Protein, (amino acids Gln32-Ser162) fused with a His-Avi tag at the N-terminus, was produced in E.coli cells.
Molecular Weight:The recombinant Biotinylated Human IL-21 protein with the His-Avi tag at the N-terminus has a predicted MW of 18.30 kDa same as Tris-Bis PAGE result.
Activity: Immobilized recombinant Human IL-21R protein with the N-His-Avi tag at 0.5 ug/ml (100 ul/Well) on the plate. Dose response curve for the recombinant Biotinylated Human IL-21 protein with the N-His tag with the EC50 of 2.5 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 Biotinylated 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 Biotinylated 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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