IL-1ra (Interleukin-1 Receptor Antagonist Protein, IL-1RN, IL-1ra, IRAP, IL1 Inhibitor, Il1rn)

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 25kD. The protein shows 26% aa homology to IL-1B and 19% homology to IL-1a. 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.\n\nApplications:\nSuitable for use in Western Blot. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 2ug/ml\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nLyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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SPECIFICATIONS

Catalog Number

I7663-25L6

Size

100ug

Applications

WB

Hosts

Rat

Reactivities

Mouse

Form

Supplied as a lyophilized powder in PBS, trehalose. Reconstitute with sterile PBS to 0.5mg/ml.

P Type

Mab

Purity

Purified by Protein A/G affinity chromatography.

Isotype

IgG1

Additional Info

Recognizes mouse IL-1ra. Species sequence homology: Recombinant equine IL-1ra and recombinant human IL-1ra (30-50%), recombinant mouse IL-1b, rmIL-18, rmIL-36Ra, rmIL-36a, rmIL-36b, rmIL-1F10, rhIL-36, rhIL-1F7, recombinant porcine IL-1ra, recombinant rat IL-1ra (<5%).