Recombinant Mouse IL‑3 R beta Fc Chimera (Catalog # 549-R3)
0.25 µg/106 cells
DA3 mouse myeloma cell line
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
Measured by its ability to neutralize IL‑3-induced proliferation in the NFS‑60 mouse myelogenous leukemia lymphoblast cell line. Holmes, K. L. et al. (1985) Proc. Natl. Acad. Sci. USA 82:6687. The Neutralization Dose (ND50) is typically 5-15 µg/mL in the presence of 0.5 ng/mL Recombinant Mouse IL‑3.
Please Note: Optimal dilutions should be determined by each laboratory for each application.
are available in the Technical Information section on our website.
Cell Proliferation Induced by IL‑3 and Neutralization by Mouse IL‑3 R beta Antibody.
Recombinant Mouse IL‑3 (Catalog # 403-ML) stimulates proliferation in the NFS‑60 mouse myelogenous leukemia lymphoblast cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Mouse IL‑3 (0.5 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Mouse IL‑3 R beta Antigen Affinity-purified Polyclonal Antibody (Catalog # AF549). The ND50 is typically 5‑15 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: IL-3 R beta
Interleukin 3 (IL-3) is a pleiotropic cytokine produced primarily by activated T cells or mast cells. IL-3 stimulates the proliferation and differentiation of hemopoietic cells including the pluripotent hematopoietic stem cells as well as various lineage-committed cells. The biological effects of IL-3 on the various cell types are mediated by the binding of IL-3 to specific cell surface receptor complexes. The functional high-affinity IL-3 receptor is a heterodimer consisting of a ligand binding alpha subunit and the beta subunit. The alpha subunit alone binds IL-3 with low affinity. The beta subunit is required for the high-affinity binding of IL-3 to the heterodimeric receptor complex. The beta subunit has also been found to be a component of the high-affinity receptor complex for IL-5 and GM-CSF and is also referred to as the beta common ( beta c) chain. In the mouse, there are two IL-3 R beta proteins. The first identified mouse IL-3 R beta was also called AIC2A and binds IL-3 with low affinity (1). The second mIL-3 R beta was referred to as AIC2B (2). AIC2B doesn’t bind IL-3 and is the homolog of the human IL-3 R beta. AIC2A was found to be the result of a gene duplication event. Both the alpha and the beta subunits are members of the cytokine receptor superfamily (3).
Itoh, N. et al. (1990) Science 247:324.
Gorman, D.M. et al. (1990) Proc. Natl. Acad. Sci. USA 87:5459.
Schrader, J.W. in Cytokine Reference, (2001) J.J. Oppenheim and M. Feldmann, eds. Academic Press, New York, p. 1899.
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