Recombinant Human IL7 protein GMP Grade(NP_000575) was expressed in E. coli.
Source:
E. coli
Species:
Human
Form:
Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4.
Bio-activity:
Fully biologically active when compared to standard. The ED50 as determined by a chemotaxis bioassay using human CXCR2 transfected mouse BaF3 cells is less than 2 ng/ml, corresponding to a specific activity of > 5.0 × 10^5 IU/mg.
Molecular Mass:
Approximately 8.4 kDa, a single non-glycosylated polypeptide chain containing 72 amino acids.
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.
Reconstitution:
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4°C before opening to recover the entire contents.
Not For Human Consumption!
