| Description : |
IL-3 is a hematopoietic growth factor that promotes the survival, differentiation and proliferation of committed progenitor cells of the megakaryocyte, granulocyte-macrophage, erythroid, eosinophil, basophil and mast cell lineages. Produced by T cells, mast cells and eosinophils, IL-3 enhances thrombopoieses, phagocytosis, and antibody-mediated cellular cytotoxicity. Its ability to activate monocytes suggests that IL-3 may have additional immunoregulatory roles. Many of the IL-3 activities depend upon co-stimulation with other cytokines. IL-3 is species-specific, variably glycosylated cytokine. |
| Source : |
E. coli |
| Species : |
Mouse |
| Form : |
Sterile Filtered White lyophilized (freeze-dried) powder. |
| Bio-activity : |
The ED50 as determined by the dose-dependent stimulation of the proliferation of murine M-NFS-60 cells is < 0.05 ng/mL, corresponding to a specific activity of > 2 × 10^7 units/mg. |
| Molecular Mass : |
Approximately 15.1 kDa globular protein containing 135 amino acid residues. |
| Protein Length : |
135 |
| AA Sequence : |
MDTHRLTRTLNCSSIVKEIIGKLPE PELKTDDEGPSLRNKSFRRVNLSKF VESQGEVDPEDRYVIKSNLQKLNCC LPTSANDSALPGVFIRDLDDFRKKL RFYMVHLNDLETVLTSRPPQPASGS VSPNRGTVEC |
| Endotoxin : |
Less than 1 EU/mg of rmIL-3 as determined by LAL method. |
| Purity : |
>98% by SDS-PAGE and HPLC analyses. |
| Storage : |
This lyophilized preparation is stable at 2-8 centigrade, but should be kept at -20 centigrade for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 centigrade. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 to -70 centigrade. Avoid repeated freeze/thaw cycles. |
| Storage Buffer : |
Lyophilized from a 0.2mm filtered solution in PBS, pH 7.4. |
| Reconstitution : |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20 centigrade. Further dilutions should be made in appropriate buffered solutions. |
