Human IL-18 R beta /IL-1 R7 Antibody

Catalog # Availability Size / Price Qty
AF118
AF118-SP
Human IL-18 R beta /IL-1 R7 Antibody in Neutralization
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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 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.

Data Example

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

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-? secretion in the KG-1 human acute myelogenous leukemia cell line in a dose-dependent manner (orange line), as measured by the Human IFN-? Quantikine ELISA Kit (Catalog # DIF50). Under these conditions, IFN-? 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 ND50is typically 0.3-1.2 µg/mL.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
Shipping
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-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
  1. Born, T.L. et al. (1998) J. Biol. Chem. 273:29445.
  2. 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

Product Datasheets

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.

1 Citation: Showing 1 - 1

  1. Defective phosphorylation of interleukin-18 receptor beta causes impaired natural killer cell function in systemic-onset juvenile idiopathic arthritis.
    Authors: De Jager W, Vastert SJ, Beekman JM, Wulffraat NM, Kuis W, Coffer PJ, Prakken BJ
    Arthritis Rheum., 2009;60(9):2782-93.
    Species: Human
    Sample Types: Cell Lysates
    Applications: Immunoprecipitation

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

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