Fully biologically active when compared to standard. The activity is assayed on anti-proliferation and anti-migration of endothelial cells in vitro and anti-angiogenesis in vivo. The specific activity of anti-migration of endothelial cells in vitro is 0.55×105 Units/mg.
纯度
> 95 % by SDS-PAGE and HPLC analyses.
内毒素水平
Level Less than 1EU/µg of rHuAngiostatin as determined by LAL method
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20 °C. Further dilutions should be made in appropriate buffered solutions.
Angiostatin K1-3 is a ~30 kDa fragment of plasminogen that has been shown to act as a potent inhibitor of angiogenesis and tumor growth in vitro and in vivo. Recombinant angiostatin is expressed in E. coli. Synonym: Angiostatin K1-3, Human. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in 20mM NaAc, pH5.5, 4% mannitol.
分子量
Approximately 30.0 KDa, a single non-glycosylated polypeptide chain containing 259 amino acids.