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Cat.No.:PKSM041095
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Synonyms | Interleukin-4;B-cell IgG differentiation factor;B-cell growth factor 1;B-cell stimulatory factor 1;IGG1 induction factor;Lymphocyte stimulatory factor 1;IL-4;BSF-1 |
Species | Mouse |
Expression_host | E.coli |
Sequence | His 21-Ser 140 |
Accession | P07750 |
Mol_Mass | 14.5 kDa |
AP_Mol_Mass | 14 kDa |
Tag | C-His |
Bio_Activity | Measure by its ability to induce HT-2 cells proliferation.The ED50 for this effect is <1 ng/mL.The specific activity of recombinant mouse IL-4 is approximately >1 x 106 IU/mg. |
Purity | > 98 % as determined by reducing SDS-PAGE. |
Endotoxin level | < 0.1 EU per μg of the protein as determined by the LAL method. |
Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
Formulation | Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
Reconstitution | Please refer to the printed manual for detailed information. |