The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Biological activityThe ED50 as determined by the dose-dependent stimulation of the proliferation of murine D10S cells was found to be < 0.01ng/ml, corresponding to a specific activity of 1 x 108 IU/mg.
% SDS-PAGE. Purity: > 98% by SDS-PAGE and HPLC analysis.
Endotoxin level is <0.1 ng per µg of IL1 alpha.
Additional notesab119727 is best-stored desiccated.
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Preparation and Storage
Stability and Storage
Shipped at 4°C. Store at -80°C. Avoid freeze / thaw cycle. For long term storage it is recommended to add a carrier protein on reconstitution (0.1% HSA or BSA).
Constituent: 99% PBS
This product is an active protein and may elicit a biological response in vivo, handle with caution.
ReconstitutionCentrifuge the vial prior to opening. Reconstitute in water to a concentration of not less than 100 µg/ml. which can then be diluted into other aqueous solutions.
IL 1 alpha
Interleukin 1 alpha
Preinterleukin 1 alpha
Pro interleukin 1 alpha
FunctionProduced by activated macrophages, IL-1 stimulates thymocyte proliferation by inducing IL-2 release, B-cell maturation and proliferation, and fibroblast growth factor activity. IL-1 proteins are involved in the inflammatory response, being identified as endogenous pyrogens, and are reported to stimulate the release of prostaglandin and collagenase from synovial cells.
Sequence similaritiesBelongs to the IL-1 family.
DomainThe similarity among the IL-1 precursors suggests that the amino ends of these proteins serve some as yet undefined function.
Cellular localizationSecreted. The lack of a specific hydrophobic segment in the precursor sequence suggests that IL-1 is released by damaged cells or is secreted by a mechanism differing from that used for other secretory proteins.