Recombinant IL-1β, Human

Catalogue Numbers: BK0094-10, BK0094-50

Sizes: 10μg, 50μg

Source: Escherichia coli

Molecular Weight: 17.3 kDa, observed by reducing SDS-PAGE.

Purity: > 95% by SDS-PAGE and HPLC analyses.

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

Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation: Lyophilized after extensive dialysis against PBS.

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

Endotoxin: <0.2 EU/μg, determined by LAL method.

Reconstitution: Reconstituted in ddH2O or PBS at 100 μg/ml.

Storage: 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.

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

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.