• Product NameRecombinant Human Interleukin-1 a (rHu IL-1a)
• Brief DescriptionRecombinant Protein
• Host SpeciesE.coli
• Purification> 97 % by SDS-PAGE and HPLC analyses.
• Species ReactivityHu
• Biological ActivityFully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine D10S cells is less than 1.0 pg ml, corresponding to a specific activity of > 1.0 ⅹ 109 IU mg.
• EndotoxinLess than 1.0 EU/μg of rHuIL-1a as determined by LAL method.
• Target NamerHu IL-1a
• Alternative Names    Lymphocyte-activating factor, LAF, Leukocyte Endogenous Mediator, LEM, Endogenous Pyrogen, EP, Mononuclear Cell Factor, MCF , Hematopoietin-1
• Accession No. accession:P01583
  GeneID:3552
• UniprotP01583
• Gene ID3552;
• Calculated MW Approximately 18.0 kDa, a sing
• SDS-PAGE MW Sterile Filtered White lyophil
• Target Sequence SAPFSFLSNV KYNFMRIIKY EFILNDALNQ SIIRANDQYL TAAALHNLDE AVKFDMGAYK SSKDDAKITV ILRISKTQLY VTAQDEDQPV LLKEMPEIPK TITGSETNLL FFWETHGTKN YFTSVAHPNL FIATKQDYWV CLAGGPPSIT DFQILENQA
• Formulation Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4.
• Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg mL. Stock solutions should be apportio
• Storage This lyophilized preparation is stable at 2-8 ˚C, but should be kept at -20 ˚C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 ˚C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 ˚C to -70 ˚C. Avoid repeated freeze thaw cycles.

Interleukin-1 alpha (IL-1α) is a non-secreted proinflammatory cytokine produced mainly by activated macrophages, as well as neutrophils, epithelial cells, and endothelial cells. It possesses metabolic, physiological, haematopoietic activities, and plays one of the central roles in the regulation of the immune responses. Both IL-1α and IL-1β binds to the same receptor and has similar identical biological properties. Among various species, the amino acid sequence of mature IL-1α is conserved 60 % to 70 % and human IL-1 has been found to be biologically active on murine cell lines. IL-1α recently started to find effective application in cosmetic and dermatological formulations, which allow to significantly harmonizing derma architecture.

1. Bankers-Fulbright, J.L., K.R. Kalli, and D.J. McKean. 1996. Life Sci, 59: 61-83. 2. Dinarello, C.A. 1997. Semin Oncol, 24: S9-81-S9-93.

• Flow Cytometry (FCM) General Protocol
• Immunofluorescence(IC)
• Immunohistochemistry(Polymer)
• Western Blotting