Reactivity | HuSpecies Glossary |
Applications | Bioactivity |
Details of Functionality | Measured by its ability to inhibit the IL-9-dependent proliferation of MO7e human megakaryocytic leukemic cells. The ED50 for this effect is 1-4 µg/mL in the presence of 2 ng/mL of recombinant human IL-9. |
Source | Mouse myeloma cell line, NS0-derived human IL-9 R protein Val40-Pro270, with a C-terminal 10-His tag |
Accession # | |
N-terminal Sequence | Val40 |
Protein/Peptide Type | Recombinant Proteins |
Gene | IL9R |
Purity | >90%, 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 |
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Theoretical MW | 27.4 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. |
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SDS-PAGE | 38 kDa, reducing conditions |
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Publications |
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Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Lyophilized from a 0.2 μm filtered solution in PBS and NaCl with BSA as a carrier protein. |
Purity | >90%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
Reconstitution Instructions | Reconstitute at 250 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin. |
The specific high affinity functional IL-9 receptor complex consists of a ligand-specific IL-9 R( alpha ) subunit and the common gamma chain that is shared with the receptors for IL-2, IL-4, IL-7 and IL-15. Both the IL-9 R subunit and the common gamma chain are members of the hematopoietin receptor superfamily. The cDNAs encoding mouse and human IL-9 receptors have been isolated. The deduced mouse and human transmembrane proteins, sharing 53% amino acid sequence identity, contain 468 and 533 amino acid residues, respectively. As a result of alternative splicing, cDNA clones encoding isoforms of IL-9 R, including a putative soluble form, have also been identified. Cells known to express IL-9 R include T cells, neutrophils, mast cells and macrophages.
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