Source:E. coli-derived, Ala21-Thr153, with an N-terminal Met
N-terminal Sequence Analysis:Met
Purity:>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Predicted Molecular Mass:15 kDa
SDS-PAGE:13 kDa, reducing conditions
Activity:Measured in a cell proliferation assay using CTLL‑2 mouse cytotoxic T cells. Gearing, A.J.H. and C.B. Bird (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 295.
The ED50 for this effect is typically 0.05-0.25 ng/mL.