RecombinantIL-1β, Human

• Description:

  Interleukin-1 beta (rhIL-1β) is a proinflammatory cytokine produced in a variety of cells including monocytes, tissue macrophages, keratinocytes and other epithelial cells. Both IL-1 alpha and IL-1 beta 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-1 beta is a secreted cytokine, IL-1 alpha is predominantly a cell-associated cytokine.Recombinant human Interleukin-1 beta (rhIL-1β) produced in E.coli is a single non-glycosylated polypeptide chain containing 153 amino acids. A fully biologically active molecule, rhIL-1β has a molecular mass of 17.3kDa analyzed by reducing SDS-PAGE and is obtained by proprietary chromatographic techniques at GenScript.

• Endotoxin:

  <0.2 EU/μg, determined by LAL method.

• Purity:

  > 95% by SDS-PAGE and HPLC analyses.

• Bioactivity:

  ED50< 1.0 pg/ml, measured by the dose-dependent stimulation of mouse D10S cells, corresponding to a specific activity of 1.0x 10ˆ9 IU/mg.

• Reconstitution:

  Reconstituted in ddH2O or PBS at 100 μg/ml.

• Molecular Weight:

  17.3 kDa, observed by reducing SDS-PAGE.

• Storage Conditions:

  Lyophilized recombinant human Interleukin-1 beta (rhIL-1β) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhIL-1β should be stable up to 2 weeks at 4°C or up to 3 months at -20°C.

• Appearance:

  Sterile Filtered White lyophilized (freeze-dried) powder.

• Formulation:

  Lyophilized after extensive dialysis against PBS.

• Host or Source:

  Escherichia coli.

• Recommended Usage:

  This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.

• CAS Number:

  9000-83-3

• AA Sequence:

  APV RSLNCTLRDS QQKSLVMSGP YELKALHLQG QDMEQQVVFS MSFVQGEESN DKIPVALGLK EKNLYLSCVL KDDKPTLQLE SVDPKNYPKK KMEKRFVFNK IEINNKLEFE SAQFPNWYIS TSQAENMPVF LGGTKGGQDI TDFTMQFVSS