beta-NGF is a neurotrophic factor structurally related to BDNF, NT-3 and NT-4. These proteins belong to the cysteine-knot family of growth factors that assume stable dimeric structures. beta-NGF is a potent neurotrophic factor that signals through its receptor beta-NGFR, and plays a crucial role in the development and preservation of the sensory and sympathetic nervous systems. beta-NGF also acts as a growth and differentiation factor for B lymphocytes, and enhances B-cell survival. The functional form of recombinant mouse beta-NGF is a non-covalently-linked homodimer of two 13.4kD, polypeptide monomers that each contain 120 amino acids and three disulfide bonds, which are required for biological activity. Molecular Weight: ~26.8kD Amino Acid Sequence (monomer): SSTHPVFHMG EFSVCDSVSV WVGDKTTATD IKGKEVTVLA EVNINNSVFR QYFFETKCRA SNPVESGCRG IDSKHWNSYC TTTHTFVKAL TTDEKQAAWR FIRIDTACVC VLSRKATRRG Biological Activity: The ED50 as determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is 1ng/ml, corresponding to a specific activity of 1x10e6 units/mg. Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
