Lyophilized from sterile 20mM NaAc, 150mM NaCl, pH 5.5, 5 % trehalose and 5 % mannitol.
Bio-activity
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is typically 0.2-2 ng/ml.
Molecular Mass
Recombinant Human β-NGF consists of 118 amino acids and has a predicted molecular mass of 13.2 kDa. β-NGF exists as a non-disulfide linked homodimer in solution.
Endotoxin
< 1.0 EU per 1 microgram of protein (determined by LAL method).
Purity
> 95 % by SDS-PAGE.
BACKGROUND
Background
Nerve growth factor is important for the development and maintenance of the sympathetic and sensory nervous systems. Extracellular ligand for the NTRK1 and NGFR receptors, activates cellular signaling cascades through those receptor tyrosine kinase to regulate neuronal proliferation, differentiation and survival. Inhibits metalloproteinase dependent proteolysis of platelet glycoprotein VI (PubMed:20164177).
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