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-1β is predominantly a cell-associated cytokine. Recombinant human IL-1β is a 17.3 kDa protein containing 153 amino acid residues.Manufactured using all non-animal reagents.
Catalog #:
AF-200-01B
Source :
E.coli
Purity :
Greater than 98% by SDS-PAGE gel and HPLC analyses.
Endotoxin Level :
Endotoxin level is less than 0.1 ng per μg (1EU/μg).
Biological Activity :
Determined by its ability to stimulate the proliferation of mouse D10S cells. The expected ED50 is ≤ 0.001 ng/ml, corresponding to a specific activity of ≥ 1 x 109 units/mg.