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mNGF 7S Protein

Native Mouse Nerve Growth Factor 7S

  • E - mNGF 7S Protein PG10026
    mouse_NGF_7S - Abgent mouse NGF 7S promotes neurite outgrowth and survival in PC12 cells.Upper panel: Cells were grown on collagen-coated plates in the absence or presence of 5 ng/ml mouse NGF 7S (#PG10026). The development of neurites over a period of 3 days was visualized by Methylene Blue staining. Lower panel: Cells were grown in the absence of serum and in the presence of varying concentrations of mouse NGF 7S or mouse NGF 2.5S (Grade II). The cell survival after 24 h was measured by the XTT method and calculated as a relative percentage of the control and plotted against concentrations used.
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PrecautionsmNGF 7S Protein is for research use only and not for use in diagnostic or therapeutic procedures.
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The neurotrophins ("neuro" means nerve and "trophe" means nutrient) are a  family of soluble, basic growth factors which regulate neuronal development, maintenance, survival and death in the CNS and the PNS.1 NGF, the first member of the family to be discovered, was originally purified  as a factor able to support survival of sympathetic and sensory spinal neurons in culture.2 It is synthesized and secreted by sympathetic and sensory target organs and provides trophic support to neurons as they  reach their final target.3 Neurotrophin secretion increases in the nervous system following injury. Schwann cells, fibroblasts, and  activated mast cells normally synthesize NGF constitutively, however direct trauma and induction of cytokines combine to increase neurotrophin production in these cells after injury.4 

NGF is purified in three forms: the 7S, 2.5S and β. The 7S, 130 kDa, form  occurs naturally in mouse submaxillary glands, and is a multimeric protein composed of two α, one β and two γ subunits. The name is derived  from its sedimentation co-efficient, 7S. The biologically active subunit is  the β, which is a 26 kDa dimer composed of two identical 120 amino acid  chains held together by hydrophobic interactions.5 The a chain stabilizes  the 7S complex and binds two zinc ions per 7S complex as cofactor at the β-γ interface. The γ chain is an arginine specific protease, it may also have plasminongen activator activity as well as mitogenic activity  for chick embryo fibroblasts.6 The 2.5S form is 9 amino acids shorter than the  β form, because of proteolysis that occurs during the purification process.7 

The structural hallmark of all the neurotrophins is the characteristic arrangement of the disulfide bridges known as the cysteine knot, which has been found in other growth factors such as Platelet-Derived Growth Factor.8 There is a 95.8% homology between the rat and  mouse forms, and a 85% homology between the human and mouse. 

NGF has been shown to regulate neuronal survival, development function and plasticity.9  Recently, involvement of NGF in processes not involving neuronal cells has been shown, such as asthma,10psoriasis11 and wound healing.12 The biological effects of NGF are  mediated by two receptors: TrkA, which is specific for NGF,  and p75, which binds all the neurotrophins.13 


1 . Roux, P. and Barker P. A. (2002)Prog. Neurobiol. 67,203.
2 . Levi-Montalcini, R. (1966) Harvey Lect.60,217.
3 . Farinas, al.(1998)Neuron21,325.
4 . Levi-Montalcini, al.(1996)Trends Neurosci. 19,514.
5 . Bradshaw, R.A. (1978)Ann. Rev. Biochem 47,191.
6 . Bax, al.(1997)Structure5,1275.
7 . Bocchini, V. and Angeletti, P.U. (1969) Proc. Natl. Acad. Sci. USA 64,787.
8 . McDonald, N.Qet al.(1991)Nature354,411.
9 . Huang, E.J. and Reichardt, L.F. (2001) Annu. Rev. Neurosci. 24,677.
10 . Freund V. and Frossard, N. (1994) Prog. Brain Res. 146,335.
11 . Raychaudhuri, S.P. and Raychaudhuri, S.K. (2004) Prog. Brain Res. 146,433.
12 . Kawamoto, K. and Matsuda, H. (2004) Prog. Brain Res. 146,369.
13 . Teng, K.K. and Hempstead, B.L. (2004) Cell Mol. Life Sci. 61,35.
14 . Darling, T. and Shooter, E. M. (1984) "Methods for preparation and assay of nerve growth factor", Cell Culture Methods for Molecular and Cellular Biology, vol. 4 (Eds. D. W. Barnes, D.A. Sinbasku, and G.H. Sato), pp. 79-83, Alan R. Liss, New York.

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$ 168.00
$ 1,076.40
Cat# PG10026
(40 western blots)
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