Certificate of Analysis
| Product Name: | Recombinant Human IL-21 Protein (E. coli) |
| Catalog Number: | M31112 |
Physical and Chemical Properties
| Form: | Lyophilized powder |
| Solubility: | Reconstitute the lyophilized powder in ddH2O to 100 μg/ml. |
| Storage: | Stable for up to 6 months at ≤ -20°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. |
Analytical Data
| QC Standard: | >95%, Endotoxin < 0.2 EU/µg |
Product Information
| Description: | IL-21 is expressed by CD4+ T cells, natural killer (NK) T cells, and Th17 cells. IL-21 plays a pivotal role in the survival and proliferation of B cells, and their differentiation to immunoglobulin (Ig) producing cells. |
| Stability and Solubility Advice: | Information concerning product stability, particularly in solution, has rarely been reported and in most cases we can only offer a general guide. We recommend that stock solutions, once prepared, are stored aliquoted in tightly sealed vials and used within 1 month. Avoid repeated freeze and thaw cycles. Storage conditions for some special products should refer to their storage details. |