R&D Systems™ Recombinant Human IL-21 Protein

Description

Extensive quality control produces industry leading bioactivity and lot-to-lot consistency that instills confidence in results and ensures reproducibility. Applications: Bioactivity

The Recombinant Human IL-21 Protein is derived from E. coli. The Recombinant Human IL-21 Protein has been validated for the following applications: Bioactivity.

Specifications

• Accession Number: Q9HBE4
• For Use With (Application): Bioactivity
• Gene ID (Entrez): 59067
• Molecular Weight (g/mol): Observed M.W.: 17kDa, reducing conditions, Theoretical M.W.: 15kDa
• Quantity: 10 μg
• Source: E. coli-derived human IL-21 protein Gln25-Ser155,with a N-terminal Met
• Storage Requirements: 12 months from date of receipt, ≤ -20° C as supplied. 1 month, 2 to 8° C under sterile conditions after reconstitution. 3 months, ≤ -20° C under sterile conditions after reconstitution.
• Endotoxin Concentration: <0.10 EU per 1μg of the protein by the LAL method.
• Gene Alias: IL21, IL-21Za11interleukin-21, interleukin 21, interleukin-21 isoform
• Common Name: IL-21
• Gene Symbol: IL21
• Biological Activity: Measured in a cell proliferation assay using N1186 human T cells. Parrish-Novak, J. et al. (2000) Nature 408:57. The ED50 for this effect is typically 2-12ng/mL.
• Conjugate: Unconjugated
• Species: Human
• Recombinant: Recombinant
• Expression System: E. coli-derived Gln25-Ser155, with a N-terminal Met
• Purity or Quality Grade: >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie™ Blue Staining