TGF- ? PROTEIN, HUMAN RECOMBINANT ANIMA

Stock Code: 3571803
Manufacturer Part No: GF313
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Application


Research CategoryStem Cell Research


Research Sub CategoryGrowth Factors & Receptors


Disclaimer


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


General description


Product Source: E. coli


Transforming growth factor alpha (TGF-α) 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-α induces transformation anchorage independence in cultured cells. Human, murine and rat TGF-α are cross-species reactive. Recombinant human TGF-α 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.


Physical form


Product is filtered through a 0.2 micron filter before lyophilization.


Recombinant animal free human TGF- α is manufactured using all non-animal reagents


Quality


Bioactivity assay: Determined by its ability to stimulate the proliferation of mouse Balb/c 3T3 cells. The expected ED50 is ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 106 units/mg.


Specificity


Cross ReactivtyChicken, Mouse, Rat


Storage and Stability


Store at -20°C for up to 6 months from date of receipt.

Quality Level100
ManufacturerSIGMA-ALDRICH
Impurities﹤0.1 µg/mg protein endotoxin (<1EU/µg)
Assay>98% (SDS-PAGE and HPLC)

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