Recombinant Human Interleukin-1 a (rHu IL-1a)

Recombinant Human Interleukin-1 a (rHu IL-1a)

• Synonyms: Lymphocyte-activating factor, LAF, Leukocyte Endogenous Mediator, LEM, Endogenous Pyrogen, EP, Mononuclear Cell Factor, MCF , Hematopoietin-1
• CAS Number: 9000-83-3
• Source: Escherichia coli.
• Purity: > 97 % by SDS-PAGE and HPLC analyses.
• Bioactivity: Fully 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 × 109 IU/mg.
• Molecular Weight: Approximately 18.0 kDa, a single non-glycosylated polypeptide chain containing 159 amino acids.
• Storage Conditions: 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.
• Formulation: Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4.
• Host or Source: Human