mIGF-I Lyophilized. Sterile-filtered prior to lyophilization. Contains no additives. Full-length, recombinant, mouse insulin-like growth factor I (IGF-I) expressed in E. coli. IGF-I regulates proliferation and survival signals through the Akt pathway. Mouse IGF-I shares 94% sequence identity with human IGF-I and exhibits cross-species reactivity. Useful in the study of cell proliferation and survival signals. Biological activity: ED50: ≤2 ng/ml (corresponding to a specific activity of ≥1 x 106 units/mg) as determined by a cell proliferation assay using FDC-P1 cells. For most in vitro applications IGF-I exerts is biological activity in the concentration range of 1-20 ng/ml.. Purity: ≥98% by SDS and HPLC. Contaminants: Endotoxin: ≤1 ng/µg IGF-I. Ref.: Clemmons, D.R., et al. 2006. Curr. Opin. in Pharmacol. 6, 620. Bell, G.I., et al. 1986. Nucleic Acids Res. 14, 7873. |