| Details of Functionality | Measured in a cell proliferation assay using T11 mouse plasmacytoma cells. Nordan, R.P. et al. (1987) J. Immunol. 139:813. The ED50 for this effect is 0.04-0.4 ng/mL. |
| Source | E. coli-derived mouse IL-11 protein Gly23-Leu199, with an N-terminal Met and Pro25-Leu199 |
| Accession # | |
| N-terminal Sequence | Met & Pro25 |
| Protein/Peptide Type | Recombinant Proteins |
| Gene | Il11 |
| Purity | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
| Endotoxin Note | <0.10 EU per 1 μg of the protein by the LAL method. |
| Dilutions |
|
|
| Theoretical MW | 19 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
|
| Publications |
|
| Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
| Buffer | Lyophilized from a 0.2 μm filtered solution in Sodium Succinate, Mannitol and Tween® 80 with Trehalose and with BSA as a carrier protein. |
| Purity | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
| Reconstitution Instructions | Reconstitute at 100 μg/mL in sterile, deionized water. |
IL-11 (Interleukin 11) is a pleiotropic cytokine in the IL-6 family, which also includes LIF, CNTF, Oncostatin M, Cardiotrophin-1, IL-27 and IL-31 (1-4). In humans, IL-11 was also independently discovered as an adipogenesis inhibitory factor (AGIF) (3). The mouse IL-11 cDNA encodes a 199 amino acid (aa) precursor, which generates a 178 aa, 19 kDa mature unglycosylated protein. Mature mouse IL-11 shares 88%, 97%, and 89% aa sequence identity with human, rat and canine IL-11, respectively. IL-11 is secreted by osteoblasts, synoviocytes, fibroblasts, chondrocytes, intestinal myofibroblasts, and trophoblasts, among other cell types (1). It is found in the plasma mainly during inflammation, such as that associated with viral infection, cancer, or inflammatory arthritis, and is considered to be primarily anti‑inflammatory (1). It stimulates hematopoiesis and thrombopoiesis, regulates macrophage differentiation, and confers mucosal protection in the intestine (1). It has also been found to enhance T cell polarization toward Th2, promote B cell IgG production, increase osteoclast bone absorption, protect endothelial cells from oxidative stress, and regulate epithelial proliferation and apoptosis (1). IL-11 synergizes with several other cytokines to produce these effects, and its effects overlap with those of IL-6 (1). IL-11 receptor activation requires formation of a complex of two IL-11 molecules with two molecules of the ligand-binding IL-11 R alpha subunit and two molecules of the ubiquitously expressed cell signaling beta subunit, gp130 (5). A soluble form of IL-11 R alpha can bind IL-11 and either form a signaling complex with gp130 on the cell surface, or inhibit cell surface IL-11 R alpha /gp130 signaling (6-8).
The concentration calculator allows you to quickly calculate the volume, mass or concentration of your vial. Simply enter your mass, volume, or concentration values for your reagent and the calculator will determine the rest.