Fully biologically active when compared to standard. The ED50 determined by inhibiting IGF-II induced proliferation ofserum free human MCF-7 cells is less than 200 ng/ml, corresponding to a specific activity of >, 5.0 × 103 IU/mg in the presence of 15ng/ml of rHuIGF-II.
内毒素水平
Level Less than 1EU/µg of rHuIGF-BP3 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.
储存条件
4 °C
抗原
IGFBP3
(Insulin-Like Growth Factor Binding Protein 3 (IGFBP3))
别名
IGF-BP3
背景
IGF-BP3 is a 30 kDa cysteine-rich secreted protein. It is the major IGF binding protein present in the plasma of human and animals and it is also found in ª-granules of platelets. In addition to its ability to modulate the activity of IGF-I and IGF-II, IGF-BP3 exerts inhibitory effects on follicle stimulating hormone (FSH) activity. Decreased plasma levels of IGF-BP3 often results in dwarfism, whereas elevated levels of IGF-BP3 may lead to acromegaly. The expression of IGF-BP3 in fibroblasts is stimulated by mitogenic growth factors such as Bombesin, Vasopressin, PDGF, and EGF. Synonym: IGF-BP3, Human. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.
分子量
28.8 kDa protein consisting of 264 amino acid residues.