IL-1ra/IL-1F3/IL1RN protein is fully biologically active when compared to standard. The ED50 as determined by inhibiting IL-1alpha- dependent proliferation of murine D10S cells is less than 50 ng/ml, corresponding to a specific activity of > 2.0 x 104 IU/mg in the presence of 50 pg/ml rHuIL-1alpha.
Source
E. coli
Protein/Peptide Type
Recombinant Protein
Gene
IL1RN
Purity
> 97 % pure by SDS-PAGE and HPLC
Endotoxin Note
Less than 1 EU/ug of IL-1ra/IL-1F3/IL1RN as determined by LAL method.
Applications/Dilutions
Dilutions
Bioactivity
SDS-Page
Theoretical MW
17.3 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.
Publications
Read Publications using NBP2-35105 in the following applications:
Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.
Buffer
Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4.
Preservative
No Preservative
Concentration
LYOPH
Purity
> 97 % pure by SDS-PAGE and HPLC
Reconstitution Instructions
Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL.
Alternate Names for Recombinant Mouse IL-1ra/IL-1F3/IL1RN Protein
DIRA
ICIL-1ra
IL1F3
IL-1F3
IL1ra
IL-1ra
IL-1ra3
IL1RN
IL-1RN
interleukin 1 receptor antagonist
IRAP
MVCD4
Background
IL-1RA was initially called the IL-1 inhibitor which is encoded by the IL1RN gene and it is a member of the interleukin 1 cytokine family. IL-1RA is secreted by various types of cells including immune cells, epithelial cells, and adipocytes. IL-RA has functions of inhibiting the activity of interleukin-1 by binding to receptor IL1R1 and preventing its association with the coreceptor IL1RAP for signaling. IL-1RA is also used in the treatment of rheumatoid arthritis, an autoimmune disease in which IL- 1 plays a key role. The murine IL-1RA is a single non-glycosylated polypeptide chain containing 152 amino acids and it has been shown to block the inflammatory responses induced by IL-1 both in vitro and in vivo. The protein shows 26 % amino acid homology to IL-1beta and 19 % homology to IL-1alpha. It also shares 90 % a.a. sequence identity with rat IL-1RA.
Limitations
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.
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