Recombinant Feline IL-5 Protein (Catalog # 1795-FL)
Measured by its ability to neutralize IL‑5-induced proliferation in the TF‑1 human erythroleukemic cell line. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The Neutralization Dose (ND50) is typically 0.1-0.5 µg/mL in the presence of 30 ng/mL Recombinant Feline IL‑5.
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Cell Proliferation Induced by IL‑5 and Neutralization by Feline IL‑5 Antibody. Recombinant Feline IL‑5 (Catalog # 1795-FL) stimulates proliferation in the TF‑1 human erythroleukemic cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Feline IL‑5 (30 ng/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Feline IL‑5 Monoclonal Antibody (Catalog # MAB1795). The ND50 is typically 0.1-0.5 µg/mL.
Preparation and Storage
Sterile PBS to a final concentration of 0.5 mg/mL.
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.
Interleukin-5 (IL-5) is a 40 kDa secreted, heparin-binding, disulfide-linked homodimeric glycoprotein that belongs to the alpha -helical group of cytokines. It promotes the proliferation, differentiation and activation of eosinophils. The 115 amino acid (aa) mature feline IL-5 shares 70% and 59% aa sequence identity with human and mouse IL-5, respectively. The IL-5 receptor is a complex of an IL-5-specific ligand-binding alpha subunit with a signal transducing common beta subunit ( beta c) that is shared with receptor complexes for IL-3 and GM-CSF.