| 背景描述 | Transforming Growth Factors alpha (TGF-α) is a 5.68 kDa member of the epidermal Growth Factors with 51 amino acid residues. TGF-α is mainly expressed from brain, skin, epithelial cell (pancreatic endocrine cells, urothelial cells, oligodendrocyte precursor cells, etc.). TGF-α is a regulator of cell proliferation and differentiation via bind to the EGFR and to act synergistically with TGF β. TGF-α also associates with myriad forms of cancer. |
| 别称 | transforming growth factor alpha, Sarcoma growth factor, TGF-type I, ETGF, TGFA |
| 蛋白编码 | P01135 |
| 分子量 | The protein has a calculated MW of 6.49 kDa. The protein migrates as 7 kDa under reducing condition (SDS-PAGE analysis). |
| 表达系统 | Escherichia coli |
| 纯度 | >98% as determined by SDS-PAGE. |
| 生物活性 | Measure by its ability to induce 3T3 cells proliferation. The ED₅₀ for this effect is <0.2 ng/mL. The specific activity of recombinant human TGF alpha is > 5 x 10⁶ IU/mg. |
| 内毒素检测 | <0.1 EU per 1 μg of the protein by the LAL method. |
| 蛋白序列 | MVVSHFNDCPDSHTQFCFHGTCRFLVQEDKPACVCHSGYVGARCEHADLLA with polyhistidine tag at the C-terminus. |
| 蛋白标签 | His Tag (C-term) |
| 产品形式 | 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. |
| 产品应用 | Cell Culture |
1. Before opening, centrifuge at 3000 rpm for 5 mins.
2.Initial Reconstitution
· Reconstitute the Lyophilized Protein in sterile H₂O to a concentration of 100-200 μg/mL.
· Then, incubate it at room temperature for at least 20 mins to ensure sufficient dissolution.
Do Not Vortex! Vigorous shaking may impair the biological activity of the protein.
· Store at 2°C to 8°C for up to 1 week.
3.Extended Storage
· After the initial reconstitution, further dilute the reconstituted protein in a buffer containing a carrier protein or stabilizer (e.g., 0.1% BSA, 10% FBS, 5% HSA, or 5% trehalose solution). The final concentration is not less than 10 μg/ml.
· Prepare aliquots (≥20 μl).
· Store at -20°C or -80°C for 3 to 6 months.
Avoid repeated freeze-thaw cycles.
| 储存 | Lyophilized Protein: Store at -20°C for 1 year. Initial Reconstitution: Store at 2°C to 8°C for up to 1 week. Extended Storage: Store at -20°C or -80°C for 3 to 6 months with a carrier protein or stabilizer. |
| 运输 | Blue Ice |
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| SDS-PAGE analysis of recombinant human TGF alpha | Human TGF Alpha, His Tag, E. coli induced 3T3 cell proliferation, with the ED₅₀ at 0.19 ng/mL. |
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