Detects IFN‑ gamma R1/CD119 in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant human IFN-gamma R2 is observed.
Polyclonal Goat IgG
Mouse myeloma cell line NS0-derived recombinant human IFN-gamma R1/CD119 Glu18-Gly245 Accession # P15260
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 Human IFN-gamma R1/CD119 (Catalog # 673-IR)
Measured by its ability to neutralize IFN‑ gamma R1/CD119-mediated inhibition of EMCV-induced cytopathy in the HeLa human cervical epithelial carcinoma 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 0.5-2 µg/mL in the presence of 2 ng/mL Recombinant Human 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 Human IFN‑ gamma R1/CD119 Antibody.
Recombinant Human IFN‑ gamma (Catalog # 285-IF) reduces the Encephalomyocarditis Virus (EMCV)-induced cytopathy in the HeLa human cervical epithelial carcinoma cell line in a dose-dependent manner (orange line). Inhibition of EMCV activity elicited by Recombinant Human IFN‑ gamma (2 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human IFN‑ gamma R1/CD119 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF673). The ND50 is typically 0.5-2 µg/mL.
IFN‑ gamma R1/CD119 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) using Goat Anti-Human IFN‑ gamma R1/CD119 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF673) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to plasma membrane. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
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.
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.
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