IL-18 BPa/IL18BP Recombinant Protein Antigen

Novus Biologicals | Catalog # NBP2-38481PEP

Novus Biologicals
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Key Product Details

Source

E. coli

Applications

Antibody Competition
View all IL-18 BPa Proteins and Enzymes »

Product Specifications

Description

A recombinant protein antigen with a N-terminal His6-ABP tag corresponding to human IL18BP.

Source: E. coli

Amino Acid Sequence: RLWEGSTSRERGSTGTQLCKALVLEQLTPALHSTNFSCVLVDPEQVVQRHVVLAQLWAGLRATLPPTQEALPSSHSSPQQQG

Fusion Tag: N-terminal His6ABP (ABP = Albumin Binding Protein derived from Streptococcal Protein G)

This product is intended to be used as a blocking antigen for antibody competition assays. Any other use of this antigen is done at the risk of the user. The use of this product for commercial production is strictly prohibited. Please contact technical support if you have any questions.

Purity

>80% by SDS-PAGE and Coomassie blue staining

Predicted Molecular Mass

27 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.

Applications

Antibody Competition (10 - 100 molar excess)

Application Notes

This recombinant antigen is only intended to be used as a blocking agent to confirm antibody specificity with the corresponding antibody, catalog number NBP2-38481.

It is purified by IMAC chromatography, and the expected concentration is greater than 0.5 mg/ml.

For current lot information, including availability, please contact our technical support team click nb-technical@bio-techne.com

Protein / Peptide Type

Recombinant Protein Antigen

Formulation, Preparation, and Storage

NBP2-38481PEP
Formulation PBS and 1M Urea, pH 7.4.
Preservative No Preservative
Concentration Please see the vial label for concentration. If unlisted please contact technical services.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Store at -20C. Avoid freeze-thaw cycles.

Background: IL-18 BPa

IL-18BP which binds to IL-18, also known as interferon-gamma inducing factor (IGIF) which is a pro-inflammatory cytokine that belongs to the IL-1 family (1). IL-18 is a pleiotropic factor involved in the regulation of both innate and acquired immune responses, playing a key role in autoimmune, inflammatory, and infectious diseases (2). Interleukin-18 binding protein (IL18-BP) is an inhibitor of the pro-inflammatory cytokine IL18. The recombinant forms of IL18BP did not exhibit species specificity and prevented interleukin-18 binding to its receptor. In addition, they inhibited interleukine-18 dependent IFN-gamma production from KG-1 cells effectively. These results suggest that the interleukin-18 binding protein may possess interleukine-18 antagonist activity (3). IL-18 plays an important role in host defense against microbial pathogens. Many poxviruses encode homologous IL-18BP that neutralizes IL-18 activity. Data show that IL-18BP prevents IL-18 from binding to IL-18R by interacting with three residues that are part of the binding site for IL-18Ralpha (4).

Long Name

Interleukin 18 Binding Protein Isoform a

Alternate Names

IL18 BPa, IL18BP

Gene Symbol

IL18BP

Additional IL-18 BPa Products

Product Documents for IL-18 BPa/IL18BP Recombinant Protein Antigen

Certificate of Analysis

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Product Specific Notices for IL-18 BPa/IL18BP Recombinant Protein Antigen

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

Related Research Areas

IL-1 Family

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Associated Pathways

IL-1 Family Signaling Pathways IL-1 Family Signaling Pathway Thumbnail