IL-1 beta

• Description :

  IL-1β is a proinflammatory cytokine produced in a variety of cells including monocytes, tissue macrophages, keratinocytes and other epithelial cells. Both IL-1α and IL-1β binds to the same receptor and has similar if not identical biological properties. These cytokines have a broad range of activities including, stimulation of thymocyte proliferation, by inducing IL-2 release, B-cell maturation and proliferation, mitogenic FGF-like activity and the ability to stimulate the release of prostaglandin and collagenase from synovial cells. However, whereas IL-1β is a secreted cytokine, IL-1α is predominantly a cell-associated cytokine. Recombinant murine IL-1β is a 17.5 kDa protein containing 153 amino acid residues.

• Synonyms :

  Il1b; Il-1b; IL-1beta

• NCBI Gene ID :

  16176

• UniProt :

  P10749

• Accession Number :

  NP_032387

• Accession Number mRNA :

  NM_008361

• Chromosomal Location :

  2 F; 2 73.0 cM

• Reactivity :

  Mouse

• Cross Reactivity :

  Human, Monkey, Pig, Rat, Mouse

• Sequence :

  MVPIRQLHYR LRDEQQKSLV LSDPYELKAL HLNGQNINQQ VIFSMSFVQG EPSNDKIPVA LGLKGKNLYL SCVMKDGTPT LQLESVDPKQ YPKKKMEKRF VFNKIEVKSK VEFESAEFPN WYISTSQAEH KPVFLGNNSG QDIIDFTMES VSS

• Assay Protocol :

  Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

• Endotoxin :

  < 0.1 ng/µg of protein (< 1EU/µg)

• Purity :

  > 98% by SDS-PAGE & HPLC analyses

• Bioactivity :

  The ED50 as determined by the dose-dependent stimulation of murine D10S cells is ≤ 0.002 ng/ml, corresponding to a specific activity of ≥ 5 x 108 units/mg.

• Length :

  153

• Form :

  Lyophilized

• Buffer :

  10mM Sodium Citrate, pH 4.0

• Reconstitution :

  Water

• Molecular Weight :

  17.5 kDa

• Storage Conditions :

  The lyophilized protein is stable at room temperature for 1 month and at 4°C for 6 months. Reconstituted working aliquots are stable for 1 week at 2°C to 8°C and for 6 months at -20°C to -80°C.

• Host or Source :

  E. coli