Detects mouse IFN-gamma R1/CD119 in direct ELISAs and Western blots. In direct ELISAs, approximately 10% cross-reactivity with recombinant human (rh) IFN-gamma RI, recombinant mouse (rm) IFN‑ alpha / beta R2, rmIFN‑ gamma R2, rhIL‑10 R beta, and rhIL‑20 R alpha is observed.
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Recombinant Mouse IFN-gamma R1/CD119 Fc Chimera (Catalog # 1026-GR)
Measured by its ability to neutralize IFN‑ gamma R1/CD119-mediated inhibition of EMCV-induced cytopathy in the L‑929 mouse fibroblast cell line. Meager, A. (1987) in Lymphokines and Interferons, a Practical Approach. Clemens, M. J. et al. (eds): IRL Press. 129. The Neutralization Dose (ND50) is typically 0.2-1 µg/mL in the presence of 1 ng/mL Recombinant Mouse IFN‑ gamma.
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.
IFN‑ gamma Inhibition of EMCV-induced Cytopathy and Neutralization by Mouse IFN‑ gamma R1/CD119 Antibody. Recombinant Mouse IFN‑ gamma (Catalog # 485-MI) reduces the Encephalomyocarditis Virus (EMCV)-induced cytopathy in the L‑929 mouse fibroblast cell line in a dose-dependent manner (orange line), as measured by Resazurin. Inhibition of EMCV activity elicited by Recombinant Mouse IFN‑ gamma (1 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti‑Mouse IFN‑ gamma R1/CD119 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1026). The ND50 is typically 0.2-1 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
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: IFN-gamma R1/CD119
The high-affinity IFN-gamma receptor complex is made up of two type I membrane proteins, IFN-gamma R1 (IFN-gamma R alpha ) and IFN-gamma R2 (IFN-gamma R beta ). Both proteins are members of the type II cytokine receptor family and share approximately 52% overall sequence identity. IFN-gamma R1 is the ligand-binding subunit that is necessary and sufficient for IFN-gamma binding and receptor internalization. IFN-gamma R2 is required for IFN-gamma signaling but does not bind IFN-gamma by itself. Human IFN-gamma R1 cDNA encodes a 499 amino acid (aa) residue protein with a 17 aa signal peptide, a 228 aa extracellular domain, a 23 aa transmembrane domain, and a 221 aa intracellular domain. Human and mouse IFN-gamma R1 share 52% amino acid sequence similarity and bind IFN-gamma in a species-specific manner. IFN-gamma R1 is constitutively expressed in most cell types. Soluble IFN-gamma R1 that binds IFN-gamma has been detected in biological fluids. The recombinant soluble IFN-gamma R1 produced at R&D Systems has been shown to bind IFN-gamma with high affinity and is a potent IFN-gamma antagonist.
Bach, E.A. et al. (1997) Annu. Rev. Immunol. 15:563.
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