Recombinant Human Interleukin-2 (rHu IL-2)

Recombinant Human Interleukin-2 (rHu IL-2)

• Synonyms: IL2, T-cell Growth Factor, TCGF, Aldesleukin
• 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 CTLL-2 cells is less than 0.1 ng/ml, corresponding to a specific activity of > 1.0 × 107 IU/mg.
• Molecular Weight: Approximately 15.4 kDa, a single non-glycosylated polypeptide chain containing 133 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 5.0.
• Host or Source: Human