Human IL-18 R beta /IL-1 R7 Antibody

Catalog #: AF118
1 Citation Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
AF118
AF118-SP

IFN‑ gamma secretion Induced by IL‑18/IL‑1F4 and Neutralization by Human IL‑18 R beta /IL‑1 R7 Antibody.

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Human IL-18 R beta /IL-1 R7 Antibody Summary

Species Reactivity

Human

Specificity

Detects human IL‑18 R beta in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant mouse IL‑18 R beta (AcPL), recombinant human (rh) IL-18 R, rhIL-1 R1, rhIL-1 RII, and rhIL-1 Rrp2 is observed.

Source

Polyclonal Goat IgG

Purification

Antigen Affinity-purified

Immunogen

Mouse myeloma cell line NS0-derived recombinant human IL-18 R beta /IL-1 R7
Phe20-Arg356
Accession # O95256

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Western Blot

0.1 µg/mL

Recombinant Human IL‑18 R beta /IL‑1 R7 Fc Chimera (Catalog # 118-AP)

Neutralization

Measured by its ability to neutralize IL‑18/IL‑1F4-induced IFN‑ gamma secretion in the KG‑1 human acute myelogenous leukemia cell line. Novick, D. et al. (1999) Immunity 10(1):127. The Neutralization Dose (ND₅₀) is typically 0.3‑1.2 µg/mL in the presence of 40 ng/mL Recombinant Human IL‑18/IL‑1F4 and 20 ng/mL Recombinant Human TNF‑ alpha.

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.

Scientific Data

Neutralization

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IFN‑ gamma secretion Induced by IL‑18/IL‑1F4 and Neutralization by Human IL‑18 R beta /IL‑1 R7 Antibody. In the presence of Recombinant Human TNF-a (20 ng/mL, Catalog # 210-TA), Recombinant Human IL-18/IL-1F4 stimulates IFN-gamma secretion in the KG-1 human acute myelogenous leukemia cell line in a dose-dependent manner (orange line), as measured by the Human IFN-y Quantikine ELISA Kit (Catalog # DIF50C). Under these conditions, IFN-gamma secretion elicited by Recombinant Human IL-18/IL-1F4 (40 ng/mL) is neutralized (green line) by increasing concentrations of Human IL-18 R beta /IL-1 R7 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF118). The ND₅₀ is typically 0.3-1.2 µg/mL.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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-18 R beta/IL-1 R7

IL-18, originally described as an interferon-gamma inducing factor (IGIF), is a member of the IL-1 family of cytokines that has multiple immunoregulatory functions. It has potent IFN-gamma inducing activities and plays a key role in the activation of T helper type 1 (Th1) responses. The functional IL-18 receptor complex consists of two components, the IL‑18 R alpha (IL-1 R5) and IL-18 R beta (also termed IL-1 R7 and AcPL) subunits. Both subunits are members of the IL-1 receptor superfamily. Although IL‑18 R alpha by itself binds IL-18 with low-affinity and IL-18 R beta does not bind IL-18 in vitro, co-expression of IL‑18 R alpha and IL-18 R beta is required for high-affinity binding and IL-18 responsiveness. Human IL-18 R beta cDNA encodes a 599 amino acid (aa) residue precursor type I membrane protein with a 14 aa signal peptide, a 342 aa extracellular region containing three immunoglobulin-like domains, a single transmembrane domain and a 222 aa cytoplasmic domain. Human and mouse IL-18 R beta share 65% aa sequence identity. The expression of IL-18 R beta parallels that of IL-18 R alpha and is detected in numerous tissues including lung, spleen, leukocytes and colon.

References

Born, T.L. et al. (1998) J. Biol. Chem. 273:29445.
Okamura, H. et al. (2000) in Cytokine Reference, Vol. 2:1605, Academic Press.

Long Name

Interleukin 18 Receptor beta

Entrez Gene IDs

8807 (Human); 16174 (Mouse)

Alternate Names

Accessory protein-like; AcPL; CD218 antigen-like family member B; CD218b antigen; CD218b; CDw218b; IL-1 R7; IL-18 R beta; IL-18 receptor accessory protein; IL-18 receptor beta; IL18R beta; IL-18RAcP; IL18RAP; IL18RB; IL-18Rb; IL-18Rbeta; IL-18R-beta; IL-1R accessory protein-like; IL1R7; IL-1R7; IL-1R-7; IL-1RAcPL; interleukin 18 receptor accessory protein; Interleukin-1 receptor 7; interleukin-18 receptor accessory protein; Interleukin-18 receptor accessory protein-like; Interleukin-18 receptor beta; MGC120589; MGC120590

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Citation for Human IL-18 R beta /IL-1 R7 Antibody

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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