TGF alpha (Transforming Growth Factor alpha)
MTGF alpha is an EGF-related polypeptide growth factor that signals through the EGF receptor, and stimulates the proliferation of a wide range of epidermal and epithelial cells. It is produced by monocytes, keratinocytes, and various tumor cells. TGF alpha induces transformation anchorage independence in cultured cells. Human, murine and rat TGF alpha are cross-species reactive. Recombinant human TGF alpha is a 50 amino acid polypeptide (5.5 kDa) which shares approximately 40% sequence homology with EGF, including 6 conserved cysteine residues, which form 3 intramolecular disulfide bonds.
- Species: Human
- Expression: E. coli Cell Expressed
- Activity: Typically ≤0.2 ng/ml ED50
- Purity: ≥98%
- Endotoxin: <1.0 EU/μg
- Molecular Mass: 5.5 kDa
- Country of Origin: USA
This was determined by SDS-PAGE gel and HPLC analysis.
The ED50 as determined by the dose-dependent stimulation of thymidine uptake by BALB/c 3T3 cells is ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 106 units/mg.
Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex.
For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% HSA) and store in working aliquots at -20°C to -80°C.