Lyophilized from sterile filtered PBS solution with BSA. Reconstitute to a concentration of 50 ug/ml with 1 ml of sterile 20 mM Trizma Base, 150 mM NaCl, pH 7.3 containing 0.1% BSA.
Store at -20 deg C until reconstitution. Following reconstitution product may be stored at 4 deg C in the short term. For long term storage aliquot and freeze at -20 deg C. Avoid repeated freeze/thaw cycles.
General Information
Biological Significance
IL1 is a name that designates two pleiotropic cytokines, IL1 alpha (IL1F1) and IL1Beta (IL1F2), which are the products of distinct genes. IL1 alpha and IL1Beta are structurally related polypeptides that share approximately 21% amino acid (aa) identity in human. Both proteins are produced by a wide variety of cells in response to inflammatory agents, infections, or microbial endotoxins. While IL1 alpha and IL1Beta are regulated independently, they bind to the same receptor and exert identical biological effects. IL1 RI binds directly to IL1 alpha or IL1Beta and then associates with IL1 R accessory protein (IL1 R3/IL1 R AcP) to form a highaffinity receptor complex that is competent for signal transduction. IL1 RII has high affinity for IL1Beta but functions as a decoy receptor and negative regulator of IL1Beta activity.