Detects mouse IL-1 beta in direct ELISAs and Western blots. In direct ELISAs and Western blots, 25-100% cross‑reactivity with human, rat, and cotton rat IL-1 beta is obseved and no cross-reactivity with recombinant porcine IL-1 beta, recombinant mouse (rm) IL-1 alpha, or rmIL-18 is observed.
Monoclonal Rat IgG2B Clone # 166926
Protein A or G purified from hybridoma culture supernatant
E. coli-derived recombinant mouse IL-1 beta Val118-Ser269 Accession # P10749
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
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.
Detection of Mouse IL‑1 beta /IL‑1F2 by Western Blot. Western blot shows lysates of RAW 264.7 mouse monocyte/macrophage cell line untreated (-) or treated (+) with LPS. PVDF membrane was probed with 1 µg/mL of Rat Anti-Mouse IL‑1 beta /IL‑1F2 Monoclonal Antibody (Catalog # MAB4011) followed by HRP-conjugated Anti-Rat IgG Secondary Antibody (Catalog # HAF005). A specific band was detected for IL‑1 beta /IL‑1F2 at approximately 35 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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-1 beta/IL-1F2
IL-1 is a name that designates two pleiotropic cytokines, IL-1 alpha (IL-1F1) and IL-1 beta (IL-1F2), which are the products of distinct genes. IL-1 alpha and IL-1 beta are structurally related polypeptides that share approximately 17% amino acid (aa) identity in mouse. Both proteins are produced by a wide variety of cells in response to inflammatory agents, infections, or microbial endotoxins. While IL-1 alpha and IL-1 beta are regulated independently, they bind to the same receptor and exert identical biological effects. IL-1 RI binds directly to IL-1 alpha or IL-1 beta and then associates with IL-1 R accessory protein (IL-1 R3/IL-1 RAcP) to form a high-affinity receptor complex that is competent for signal transduction. IL-1 RII has high affinity for IL-1 beta but functions as a decoy receptor and negative regulator of IL-1 beta activity. IL-1ra functions as a competitive antagonist by preventing IL-1 alpha and IL-1 beta from interacting with IL-1 RI (1-4). The mouse IL-1 beta cDNA encodes a 269 aa precursor. A 117 aa propeptide is cleaved intracellularly by the cysteine protease IL-1 beta -converting enzyme (Caspase-1/ICE) to generate the active cytokine (5, 6). The 17 kDa mature mouse IL-1 beta shares 90% aa sequence identity with cotton rat and rat and 65%-78% sequence identity with canine, equine, feline, human, porcine, and rhesus macaque IL-1 beta.
Allan, S.M. et al. (2005) Nat. Rev. Immunol. 5:629.
Boraschi, D. and A. Tagliabue (2006) Vitam. Horm. 74:229.
Kornman, K.S. (2006) Am. J. Clin. Nutr. 83:475S.
Isoda, K. and F. Ohsuzu (2006) J. Atheroscler. Thromb. 13:21.
Gray, P.W. et al. (1986) J. Immunol. 137:3644.
Martinon, F. and J. Tschopp (2007) Cell Death Differ. 14:10.
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.
The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.