GMF-beta is a 17-kDa brain-specific protein that was isolated from bovine brain homogenate as a substance inducing the maturation of normal neurons as well as glial cells, and at first, it was considered to be a neurotrophic factor. The amino acid sequence of GMFB is highly conserved among many species, suggesting that it plays basic roles across many species. The expression of GMF-b is largely limited to the brain, especially the glial cells and some neurons. Schwann cells of the distal segment of the transected nerve express GMF-b, and this induction of GMF-b coincides with the temporal expression of nerve growth factor receptors in the cell.
Alternative Names
GMF-beta ; GMFB
Quantity
100 µg
Regulatory
RUO
Source
E. coli
Host
Human
Endotoxin Level
<1.0 EU/μg of recombinant protein as determined by the LAL method.
Biological Activity Comment
ED50 not determined.
Weight
15.0 kDa
Description
A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
Format
Lyophilized PowderRecombinant GMFB was lyophilized from a 0.2 μm filtered 20 mM PB,130 mM NaCl solution pH 7.5.
Purity
>95% as determined by SDS-PAGE
Storage
The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at 2° - 8°C for one month, or at -20°C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.