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Human TGF-β protein

Human TGF-β protein

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Specification

Product name Human TGF-β protein
Sequence Amino acid sequence derived from Human TGF-β1 (Met 278-Asn 390)(P01137) was expressed with 6×His tag at the C-terminus.
Activity Measure by its ability to inhibit the IL-4 dependent proliferation in HT-2 cells. The ED₅₀ for this effect is <0.1 ng/mL. The specific activity of recombinant human TGF beta 1 is approximately >5 x 10⁷ IU/mg. Measure by its ability to induce proliferation in MCF-7 cells. The ED₅₀ for this effect is <3.2 ng/mL.
Protein length The protein has a calculated MW of 13.7 kDa. The protein migrates as 13 kDa under reducing condition (SDS-PAGE analysis).
Preparation method E. coli
Purity >98% as determined by SDS-PAGE.
Alternative Differentiation inhibiting factor, Cartilage-inducing factor, CED, DPD1, IBDIMDE, LAP, TGFB

Product Properties

Formulation The protein was lyophilized from a 0.2 µm filtered solution containing 20 mM sodium citrate and 0.2 M NaCl, pH 4.5. If you have any concerns or special requirements, please confirm with us.
Features & Benefits Endotoxin:<0.1 EU per 1 μg of the protein by the LAL method.
Molecular weight The protein has a calculated MW of 13.7 kDa. The protein migrates as 13 kDa under reducing condition (SDS-PAGE analysis).
Usage notes Centrifuge at 3000 rpm for 5 mins before opening. It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 100 μg/mL and incubate the stock solution at room temperature for at least 20 mins to ensure sufficient re-dissolved. Do Not Vortex! Vigorous shaking may impair the biological activity of the protein.
Storage instructions Lyophilized protein should be stored at -20°C for 1 year. Upon reconstitution,  store at 2°C to 8°C for up to 1 week.  Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1% BSA, 10%FBS, 5%HSA or 5% trehalose  solution), protein aliquots should be stored at -20°C or -80°C for 3-6 months. Avoid repeated freeze/thaw cycles.
Shipping Gel pack with blue ice.
Precautions The product listed herein is for research use only and is not intended for use in human or clinical diagnosis. Suggested applications of our products are not recommendations to use our products in violation of any patent or as a license. We cannot be responsible for patent infringements or other violations that may occur with the use of this product.

Additional Information

Background The transforming Growth Factors beta (TGF beta) family of cytokines are ubiquitous, multifunctional, and essential to survival. They play the central roles in growth, development, inflammation, repair, and host immunity. The mammalian TGF beta isoforms (TGF beta 1, beta 2 and beta 3) are secreted as potential precursors and possess a variety of cell surface receptors and produces at least two mediate signal transductions.
Alternative Differentiation inhibiting factor, Cartilage-inducing factor, CED, DPD1, IBDIMDE, LAP, TGFB
Accession P01137

Image & description

Fig.SDS-PAGE analysis of Human TGF-β protein

Fig.SDS-PAGE analysis of Human TGF-β protein

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