Human IL-18 BPa Antibody

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MAB119
MAB119-SP

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Detection of IL-18 BPa by Western Blot
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Human IL-18 BPa Antibody Summary

Species Reactivity
Human
Specificity
Detects human IL-18 BPa in direct ELISAs and Western blots. In direct ELISAs and Western blots, does not cross-react with recombinant mouse (rm) IL‑18 BPc or rmIL-18 BPd.
Source
Monoclonal Mouse IgG1 Clone # 136033
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Mouse myeloma cell line NS0-derived recombinant human IL-18 BPa
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.

Applications

Recommended Concentration
Sample
Western Blot
1 µg/mL
Recombinant Human IL‑18 BPa Fc Chimera (Catalog # 119-BP)

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

Western Blot Detection of IL-18 BPa by Western Blot View Larger

Detection of IL-18 BPa by Western Blot TNFR1-Fc-enhanced axon growth occurs independently of action potential generation & the requirement for PKC activation. (a) Bar charts of length & branch number & Sholl profiles of P0 SCG neurons cultured for 24 h with either 10 ng ml−1 NGF alone (control), NGF & 10 ng ml−1 TNFR1-Fc, NGF & 100 nM TTX or NGF, TNFR1-Fc & TTX. Mean ± s.e.m of neurite arbour data of 150 neurons per condition combined from three separate experiments of each type (***p < 0.001, statistical comparison with control). (b) Representative immunoblot probed for phospho-(Ser660) PKC, total PKC & beta -III tubulin of lysates of P0 SCG neurons that were cultured for 12 h in medium containing 10 ng ml−1 NGF before being treated for 15 min with TNFR1-Fc & 1 µM mibefradil. The bar chart plots the densitometry from four separate WBs of the ratio of pPKC to total PKC, normalized to 100% for the controls, mean ± s.e.m. (c) Representative immunoblot probed for phospho-ERK1/phospho-ERK2, total ERK1/ERK2 & beta -III tubulin of lysates of P0 SCG neurons that were cultured for 12 h in medium containing 10 ng ml−1 NGF before being treated for 15 min with 10 ng ml−1 TNFR1-Fc & 10 µM GF 109203X. The bar chart plots the densitometry from four separate WBs of the ratio of pERK1/2 to total ERK1/2, normalized to 100% for the controls (*p < 0.05 & **p < 0.01, statistical comparison with control). (d) Bar charts of length & branch point number & the Sholl profiles of P0 SCG neurons cultured for 24 h with either NGF alone (control), NGF & TNFR1-Fc, NGF & GF 109203X or NGF, TNFR1-Fc & GF 109203X. The data shown represent the mean ± s.e.m. of neurite arbour data of 150 neurons per condition combined from three separate experiments of each type (***p < 0.001, statistical comparison with control). Image collected & cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/28100666), licensed under a CC-BY license. Not internally tested by R&D Systems.

Western Blot Detection of IL-18 BPa by Western Blot View Larger

Detection of IL-18 BPa by Western Blot TNFR1-Fc-enhanced axon growth occurs independently of action potential generation & the requirement for PKC activation. (a) Bar charts of length & branch number & Sholl profiles of P0 SCG neurons cultured for 24 h with either 10 ng ml−1 NGF alone (control), NGF & 10 ng ml−1 TNFR1-Fc, NGF & 100 nM TTX or NGF, TNFR1-Fc & TTX. Mean ± s.e.m of neurite arbour data of 150 neurons per condition combined from three separate experiments of each type (***p < 0.001, statistical comparison with control). (b) Representative immunoblot probed for phospho-(Ser660) PKC, total PKC & beta -III tubulin of lysates of P0 SCG neurons that were cultured for 12 h in medium containing 10 ng ml−1 NGF before being treated for 15 min with TNFR1-Fc & 1 µM mibefradil. The bar chart plots the densitometry from four separate WBs of the ratio of pPKC to total PKC, normalized to 100% for the controls, mean ± s.e.m. (c) Representative immunoblot probed for phospho-ERK1/phospho-ERK2, total ERK1/ERK2 & beta -III tubulin of lysates of P0 SCG neurons that were cultured for 12 h in medium containing 10 ng ml−1 NGF before being treated for 15 min with 10 ng ml−1 TNFR1-Fc & 10 µM GF 109203X. The bar chart plots the densitometry from four separate WBs of the ratio of pERK1/2 to total ERK1/2, normalized to 100% for the controls (*p < 0.05 & **p < 0.01, statistical comparison with control). (d) Bar charts of length & branch point number & the Sholl profiles of P0 SCG neurons cultured for 24 h with either NGF alone (control), NGF & TNFR1-Fc, NGF & GF 109203X or NGF, TNFR1-Fc & GF 109203X. The data shown represent the mean ± s.e.m. of neurite arbour data of 150 neurons per condition combined from three separate experiments of each type (***p < 0.001, statistical comparison with control). Image collected & cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/28100666), licensed under a CC-BY license. Not internally tested by R&D Systems.

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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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 BPa

Interleukin 18 binding protein (IL-18 BP) is a secreted glycoprotein, which functions as an IL-18 antagonist by binding to IL-18 and blocking its biological activity. IL‑18 BP bears no amino acid sequence homology to the membrane-associated IL-18 and IL-1 receptor proteins. The gene for human IL-18 BP has been localized to chromosome 11q13. It encodes for at least four isoforms by alternative splicing. The IL-18 BP isoforms a and c each contain one immunoglobulin (Ig)-like C2-type domain while isoforms b and d lack a complete Ig domain. The complete Ig domain has been shown to be essential to the binding and neutralizing properties of the binding proteins. Two isoforms of mouse IL18 BP (c and d) containing the complete Ig domain have also been isolated and shown to neutralize IL-18 bioactivity. Human and mouse IL-18 BPs share approximately 61% amino acid sequence identity. Several poxviruses also encode proteins with sequence similarity to the human and mouse IL-18 BP. Viral IL-18 BPs have been shown to bind and inhibit IL-18 responses and may be involved in modulating host immune responses. The expression of IL-18 BP is markedly upregulated by IFN-gamma, suggesting that IL-18 activity is modulated by a negative feedback mechanism mediated by IL-18 BP.

References
  1. Mühl, H. et al. (2000) Biochem. Biophys. Res. Commun. 267:960.
  2. Kim, S-H. et al. (2000) Proc. Nat. Acad. Sci. USA 97:1190.
  3. Calderara, S. et al. (2001) Virology 279:22.
Long Name
Interleukin 18 Binding Protein Isoform a
Entrez Gene IDs
10068 (Human); 84388 (Rat); 107126419 (Cynomolgus Monkey)
Alternate Names
IL18 BPa; IL-18 BPa; IL18BP; IL-18BP; IL18BPa; interleukin 18 binding protein; interleukin-18-binding protein; MC51L-53L-54L homolog gene product; tadekinig-alfa

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Citation for Human IL-18 BPa 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. T-type Ca2+ channels are required for enhanced sympathetic axon growth by TNF� reverse signalling
    Authors: L Kisiswa, C Erice, L Ferron, S Wyatt, C Os¢rio, AC Dolphin, AM Davies
    Open Biol, 2017-01-01;7(1):.

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