Invitrogen™ Bovine IL-1 beta Recombinant Protein

Description

Recombinant Protein

For dilution, use a buffer containing carrier protein, e.g. PBS with 1% BSA or a neutral media containing 10% FCS and freeze in aliquots at -70°C. Activity: The biological activity of recombinant bovine IL-1-beta was determined by measuring the proliferation of mouse D10.G4.1 cells (Kaye J. et al. (1984) J. Immunol. 133:1339). The ED50 (or 1 unit of activity) for this effect in our laboratories typically falls into the range of 14.1 - 21.1 pg/mL. Expression: Mature bovine IL-1-beta was expressed in Pichia pastoris, KM71H. GenBank™ Accession # P09428, amino acids 114 - 266. For protein verification, the expressed protein was N-terminal sequenced and begins with the following 10 amino acids: *EAEAAPVQSI. *The underlined sequence is due to incomplete cleavage of the alpha-factor secretory signal sequence by the Ste 13 protease. Reconstitute with 0.5 mL of distilled water.

Interleukin-1 beta (IL-1 beta) is a proinflammatory cytokine expressed by monocytes, macrophages, and dendritic cells. IL-1 beta is synthesized in response to inflammatory stimuli as a 31 kDa inactive pro-form that accumulates in the cytosol. Cleavage of pro-IL-1 beta into the active 17 kDa protein requires the activation of inflammasomes, which are multi-protein complexes that respond to pathogens, stress conditions, and other danger signals. Inflammasome activation triggers the processing of the caspase-1 precursor into its active form, which in turn cleaves pro-IL-1 beta. IL-1 beta lacks a signal sequence peptide for classical ER/Golgi pathway and is secreted alongside caspase-1 via an alternate and incompletely understood mechanism. Although IL-1 beta is most often secreted in its active form, secretion of the uncleaved protein may be detectable under some biological conditions. IL-1 beta signals through two receptors, IL-1RI and IL-1RII, both of which are shared with IL-1 alpha. IL-1 beta activity can be moderated by IL-1 Receptor Antagonist (IL-1RA), a protein produced by many cell types that blocks receptor binding through competitive inhibition. IL-1 beta play an important role in innate host defense by triggering the production of other proinflammatory cytokines in target cells and initiating acute-phase responses to infection and injury. Elevated levels of IL-1 beta have been associated with many chronic inflammatory conditions IL-1 beta neutralizing antibodies potential therapeutic value.

Specifications

• Accession Number: P09428
• For Use With (Application): ELISA, Immunoprecipitation, Western Blot
• Formulation: PBS with no preservative
• Gene ID (Entrez): 281251
• Molecular Weight (g/mol): 17.7 kDa
• Name: Bovine IL-1 beta
• Quantity: 20 μg
• Source: Yeast
• Regulatory Status: RUO
• Gene Alias: catabolin; cytokine; Hematopoietin 1 (H1); IFN beta inducing factor; il 1 b; IL 1β; IL-1; IL1 B; IL-1 beta; IL-1 precursor; IL1B; IL-1 B; IL1B1; IL1beta; IL-1 beta; IL1-BETA; IL1F2; IL1β; ILN; Interleukin; interleukin 1 beta; Interleukin 1 beta precursor; interleukin 1, beta; interleukin 1, beta 1; interleukin 1-beta; interleukin*1*beta; Interleukin1 beta; interleukin-1 beta; interleukin-1 beta precursor; interleukin-1 beta precursor (AA -113 to 153); interleukin-1 beta proprotein; interleukin-1 b; interleukin-1 beta; interleukin-beta; LAF; lymphocyte proliferation-potentiating factor; Osteoclast activating factor (OAF); preinterleukin 1 beta; Pro interleukin 1 beta; prointerleukin-1 beta; pro-interleukin-1-beta
• Common Name: IL-1 beta
• Gene Symbol: IL1B
• Biological Activity: ED50 = 106-159 pg/mL; determined by the dose-dependent proliferation of mouse D10.G4.1 cells.
• Conjugate: Unconjugated
• Species: Yeast
• Recombinant: Recombinant
• Sequence: Bovine IL-1 beta, amino acids 114-266 (Accession # P09428)
• Content And Storage: 4°C
• Expression System: P. pastoris
• Form: Lyophilized
• Protein Subtype: Recombinant
• Purity or Quality Grade: >95% by SDS-PAGE analysis

Safety and Handling

WARNING: Reproductive Harm - www.P65Warnings.ca.gov