Recombinant Human beta-NGF Protein, CF Summary
Details of Functionality |
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The ED 50 for this effect is 0.2-2 ng/mL. |
Source |
Mouse myeloma cell line, NS0-derived human beta-NGF protein Ser122-Ala241 |
Accession # |
|
N-terminal Sequence |
Ser122 |
Protein/Peptide Type |
Recombinant Proteins |
Gene |
NGF |
Purity |
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
Endotoxin Note |
<0.10 EU per 1 μg of the protein by the LAL method. |
Applications/Dilutions
Dilutions |
|
Theoretical MW |
13.5 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
SDS-PAGE |
13 kDa, reducing conditions |
Publications |
Read Publications using 256-GF/CF in the following applications:
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Packaging, Storage & Formulations
Storage |
Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 degreesC as supplied. 1 month, 2 to 8 degreesC under sterile conditions after reconstitution. 3 months, -20 to -70 degreesC under sterile conditions after reconstitution. |
Buffer |
Lyophilized from a 0.2 μm filtered solution in Acetic Acid. |
Purity |
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
Reconstitution Instructions |
Reconstitute at 100 μg/mL in sterile PBS. |
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human beta-NGF Protein, CF
Background
NGF was initially isolated in the mouse submandibular gland as a 7S complex composed of three non-covalently linked subunits, alpha , beta , and gamma . Both the alpha and gamma subunits of NGF are members of the kallikrein family of serine proteases while the beta subunit, called beta -NGF or 2.5S NGF, exhibits all the biological activities ascribed to NGF. Recombinant human beta -NGF is a homodimer of two 120 amino acid polypeptides. The human protein shares approximately 90% homology at the amino acid level with both the mouse and rat beta -NGF and exhibits cross-species activity. NGF is a well-characterized neurotropic protein that plays a critical role in the development of sympathetic and some sensory neurons in the peripheral nervous system. In addition, NGF can also act in the central nervous system as a trophic factor for basal forebrain cholinergic neurons. NGF has also been shown to have biological effects on non-neuronal tissues. NGF is mitogenic for a factor-dependent human erythroleukemic cell line, TF-1. NGF has been found to increase the number of mast cells in neonatal rats and to induce histamine release from peritoneal mast cells. NGF will enhance histamine release and strongly modulate the formation of lipid mediators by basophils in response to various stimuli. NGF will also induce the growth and differentiation of human B lymphocytes as well as suppress apoptosis of murine peritoneal neutrophils. These results, taken together, suggest that NGF is a pleiotropic cytokine which, in addition to its neurotropic activities, may have an important role in the regulation of the immune system.
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