rrGDNF Glial Derived Neurotrophic Factor Lyophilized. Lyophilized from 35% Acetonitrile, 0.1% TFA, 50 µg BSA/µg GDNF. AVOID FREEZE/THAW CYCLES. Recombinant, rat glial derived neurotrophic factor expressed in S. frugiperda insect cells. Native GDNF exists as a disulfide homodimeric glycoprotein and is a novel member of the TGF-b superfamily. Titrate the protein for optimal results in individual systems. Immbolized rrGFRa/Fc at 2 µg/ml (100 µl/neu) can bind GDNF at a linear range of 0.1-10 ng/ml. Biological activity: ED50 = 1-3 ng/ml as measured by the ability to support the survival and stimulate neurite outgrowth of cultured embryonic chick dorsal root ganglia. Immbolized rrGFRa/Fc at 2 µg/ml (100 µl/neu) can bind GDNF at a linear range of 0.1-10 ng/ml.. Purity: ≥97% by SDS-PAGE. Contaminants: Endotoxin: ≤1 EU/µg GDNF. Ref.: Durbec, P., et al. 1996. Nature 381, 789. Jing, s., et al. 1996. Cell 85, 1113. Treanor, J.J.S., et al. 1996. Nature 382 80. Trupp, M., et al. 1996. Nature 381, 785. Hudson, J., et al. 1995. Brain Res. Bull. 36, 425. Tomac, A., et al. 1995. Nature 373, 335. Lin, L.-F.H., et al. 1993. Science 260, 1130. |