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Recombinant Human IL-18 R alpha/IL-1 R5 His-tag, CF

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Recombinant Human IL‑18 R alpha /IL‑1 R5 His-tag Protein (Catalog # 11179-LR) inhibits the Recombinant Human IL‑18/IL‑1F4 (9124-IL) induced response on KG‑1 human acute myelogenous leukemia cells in the presence of Recombinant Human IL‑18 R beta /IL-1 R7 Fc Chimera (118-AP). The ED50 for this effect is 0.400-4.00 μg/mL.
Recombinant Human IL‑18 R alpha /IL‑1 R5 His-tag Protein (Catalog # 11179-LR) inhibits the Recombinant Human IL‑18/IL‑1F4 (9124-IL) induced response on KG‑1 human acute myelogenous leukemia cells in the ...read more
2 μg/lane of Recombinant Human IL‑18 R alpha /IL‑1 R5 His-tag Protein (Catalog # 11179-LR) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

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Recombinant Human IL-18 R alpha/IL-1 R5 His-tag, CF Summary

Details of Functionality

Measured by its ability to inhibit the Recombinant Human IL-18/IL-1F4 (Catalog # 9124-IL) induced response on KG-1 human acute myelogenous leukemia cells in the presence of Recombinant Human IL-18 R beta /IL-1 R7 Fc Chimera  (Catalog # 118-AP). The ED50 for this effect is 0.400-4.00 μg/mL.
Source
Chinese Hamster Ovary cell line, CHO-derived human IL-18 R alpha/IL-1 R5 protein
Glu20-Arg329, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Glu20 & Cys22
Protein/Peptide Type
Recombinant Proteins
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
37 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
57-68 kDa, under reducing conditions.

Packaging, Storage & Formulations

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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 500 μg/mL in PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human IL-18 R alpha/IL-1 R5 His-tag, CF

  • CD218a
  • CD218a;CDw218a;IL18R1;IL18RA;IL-18Ralpha;IL-18R-alpha;IL18Ralpha2;IL1RRP;IL-1Rrp;Interleukin-18 receptor 1
  • IL-1 R5
  • IL-1 Rrp
  • IL-18 R alpha
  • IL-18 R1
  • IL18R alpha
  • IL18R1
  • IL-18Ra

Background

IL-18 Receptor alpha (IL-18 Ra), also known as IL-18 R1, IL-1 R5, and IL-1 Rrp, is a transmembrane component of the IL-18 Receptor (1). It associates with IL‑18 Rb/IL‑1 R7 to form the high affinity receptor complex for IL-18 and confer cellular responsiveness to IL-18 (2, 3). IL-18 is a member of the IL-1 family of cytokines and shares numerous immunoregulatory functions with IL-12. Mature human IL-18 Ra consists of a 308 amino acid (aa) extracellular domain (ECD) with three immunoglobulin-like domains, a 21 aa transmembrane segment, and a 191 aa cytoplasmic domain (4). Within the ECD, human IL-18 Ra shares 56% aa sequence identity with mouse and rat IL-18 Ra. IL-18 Ra is widely expressed on epithelial cells as well as on B cells, NK cells, CD4+ and CD8+ T cells, and dendritic cells (5-8). Signaling through the IL-18 receptor promotes a Th1 biased immune response and NK cell cytolytic activity (6, 7, 9-11). It also contributes to cigarette smoke-induced airway inflammation and epithelial damage (12). 


  1. Dinarello, C.A. et al. (2013) Front. Immunol. 4:289.
  2. Torigoe, K. et al. (1997) J. Biol. Chem. 272:25737.
  3. Born, T.L. et al. (1998) J. Biol. Chem. 273:29445.
  4. Parnet, P. et al. (1996) J. Biol. Chem. 271:3967.
  5. Kunikata, T. et al. (1998) Cell Immunol. 189:135.
  6. Smeltz, R.B. et al. (2001) J. Exp. Med. 194:143.
  7. Chan, W.L. et al. (2001) J. Immunol. 167:1238.
  8. Kaser, A. et al. (2004) Blood 103:648.
  9. Tomura, M. et al. (1998) J. Immunol. 160:3759.
  10. Yoshimoto, T. et al. (1998) J. Immunol. 161:3400.
  11. Hyodo, Y. et al. (1999) J. Immunol. 162:1662.
  12. Kang, M.J. et al. (2007) J. Immunol. 178:1948.

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Recombinant Human
IL-18 R alpha/IL-1 R5 ...
11179-LR
Recombinant Human IL-18 R alpha/IL-1 R5 His-tag, CF
Species: Hu
Applications: Bioactivity

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