Human Epidermal Growth Factor (hEGF) #8916
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Product Information
Formulation
With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 20 μg BSA per 1 μg hEGF. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2.
Storage
Stable in lyophilized state at -20°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles. Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
Product Description
| MW (kDa) | 6 |
| Purity | >98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hEGF. All lots are greater than 98% pure. |
| Endotoxin | Less than 0.01 ng endotoxin/1 μg hEGF. |
| Activity | The bioactivity of recombinant hEGF was determined in a MCF10A cell proliferation assay. The ED50 of each lot is between 10-600 pg/ml. |
| Molecular Formula | Recombinant hEGF has a Met on the amino terminus and has a calculated MW of 6353. DTT-reduced and non-reduced protein migrate as 6 kDa polypeptides. The expected amino-terminal MNSDS of recombinant hEGF was verified by amino acid sequencing. |
Source / Purification
Recombinant human EGF (hEGF) Asn971-Arg1023 (Accession #NM_0011963) was produced in E. coli at Cell Signaling Technology.
Background
EGF is produced by epithelial cells, fibroblasts and many other cell types (1,2). Low molecular weight soluble EGF is generated through proteolysis of a larger ~130,000 molecular weight transmembrane precursor (1,2). Both soluble and membrane forms of EGF are active (2). EGF induces proliferation, differentiation, and survival of many cell types including tumor-derived cells (1,2, 3). There are multiple members of the EGF family and multiple members of the Erb/Her EGF receptor family. EGF binds to ErbB1/HER1 and induces homodimerization or induces heterodimerization with other Erb/Her members (1). Binding of EGF signals through the MAPK, PI3K/Akt, and STAT 5 pathways (1). EGF, EGF family members, EGF receptors and their signaling pathways are involved in many cancers and are targets for therapeutic intervention (1, 2).
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For Research Use Only. Not For Use In Diagnostic Procedures.
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