Recombinant Mouse IL-1ra/IL-1F3 Protein

R&D Systems, part of Bio-Techne | Catalog # 480-RM

R&D Systems, part of Bio-Techne
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Carrier Free
480-RM-010/CF
480-RM-050/CF
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With Carrier
480-RM-010
480-RM-050
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Key Product Details

Source

E. coli

Accession #

Q542W1

Conjugate

Unconjugated

Applications

Bioactivity

View all IL-1ra/IL-1F3 Proteins and Enzymes »

Product Specifications

Source

E. coli-derived mouse IL-1ra/IL-1F3 protein
Arg8-Gln159, with an N-terminal Met

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Met

Predicted Molecular Mass

17 kDa

Activity

Measured by its ability to inhibit IL-1 alpha-dependent proliferation in D10.G4.1 mouse helper T cells. Symons, J.A. et al. (1987) in Lymphokines and Interferons, a Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 272.
The ED50 for this effect is 15-60 ng/mL in the presence of 50 pg/mL of recombinant human IL-1 alpha.

Reviewed Applications

Read 5 reviews rated 5 using 480-RM in the following applications:

Formulation, Preparation and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 480-RM
Formulation Lyophilized from a 0.2 μm filtered solution in Citric Acid, NaCl and EDTA with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
  • 12 months from date of receipt, ≤ -20 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, ≤ -20 °C under sterile conditions after reconstitution.
Carrier Free: 480-RM/CF
Formulation Lyophilized from a 0.2 μm filtered solution in Citric Acid, NaCl and EDTA.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
  • 12 months from date of receipt, ≤ -20 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, ≤ -20 °C under sterile conditions after reconstitution.

Background: IL-1ra/IL-1F3

IL-1ra was originally isolated from the urine of patients with monocytic leukemia and has also been purified from adherent monocytes. The naturally-occurring, fully glycosylated form has an apparent molecular weight of about 25,000 Daltons. The protein shows 26% amino acid homology to IL-1 beta and 19% homology to IL-1 alpha. It will compete with either factor for receptor binding, but does not interact with either one. Human IL-1ra will bind to both types of IL-1 receptor (I and II) on human cells. In mouse, IL-1 RII does not bind IL-1ra. The recombinant, non-glycosylated form of IL-1ra blocks binding of IL-1 to its receptor equally as well as the naturally-occurring, glycosylated form. The IL-1ra has been shown to block the inflammatory responses induced by IL-1 both in vitro and in vivo. Pre-clinical and clinical studies were done to test possible therapeutic applications for IL-1ra in the treatment of sepsis, rheumatoid arthritis and chronic myelogenous leukemia.

Long Name

Interleukin 1 Receptor Antagonist

Alternate Names

DIRA, ICIL-1ra, IL-1F3, IL-1ra3, IL-1RN, IL1ra, IL1RN, MVCD4

Entrez Gene IDs

3557 (Human); 16181 (Mouse); 60582 (Rat); 397499 (Porcine)

Gene Symbol

IL1RN

UniProt

Q542W1

Additional IL-1ra/IL-1F3 Products

Product Documents for Recombinant Mouse IL-1ra/IL-1F3 Protein

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS 480-RM (with carrier)
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Product Specific Notices for Recombinant Mouse IL-1ra/IL-1F3 Protein

For research use only

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