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Human EGF protein

Human EGF protein

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Specification

Product name Human EGF protein
Sequence Amino acid sequence derived from mature form of human EGF (NP_001954.2) (Asn 971-Arg 1023) was expressed and purified, with an initial Met at the N-terminus.
Activity Measured in a cell proliferation assay using Balb/C 3T3 mouse embryonic fibroblasts. The ED50 for this effect is typically 0.15-0.75 pg/mL.
Protein length The recombinant human EGF consisting of 54 amino acids and has a calculated molecular mass of 6.3 kDa as estimated in SDS-PAGE under reducing conditions.
Preparation method E. coli
Purity > 92 % as determined by SDS-PAGE
Alternative Epidermal Growth Factor; HOMG4; URG; Pro-epidermal growth factor; EGF

Product Properties

Formulation Lyophilized from sterile PBS, pH 7.4
Molecular weight 6.3 kDa
Usage notes Always centrifuge tubes before opening. It is recommended to reconstitute the lyophilized Human EGF protein in sterile ddH2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Storage instructions Lyophilized Human EGF protein product should be stored desiccated below -20°C. Upon reconstitution, the protein should be stored at 4°C between 2-7 days and for future use below -20°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.
Shipping The product is shipped at ambient temperature.
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 EGF is the founding member of the EGF-family of proteins. Members of this protein family have highly similar structural and functional characteristics. EGF contains 9 EGF-like domains and 9 LDL-receptor class B repeats. Human EGF is a 6045-Da protein with 53 amino acid residues and three intramolecular disulfide bonds. As a low-molecular-weight polypeptide, EGF was first purified from the mouse submandibular gland, but since then it was found in many human tissues including submandibular gland, parotid gland. It can also be found in human platelets, macrophages, urine, saliva, milk, and plasma. EGF is a growth factor that stimulates the growth of various epidermal and epithelial tissues in vivo and in vitro and of some fibroblasts in cell culture. It results in cellular proliferation, differentiation, and survival. Salivary EGF, which seems also regulated by dietary inorganic iodine, also plays an important physiological role in the maintenance of oro-esophageal and gastric tissue integrity. EGF acts by binding with high affinity to epidermal growth factor receptor on the cell surface and stimulating the intrinsic protein-tyrosine kinase activity of the receptor. The tyrosine kinase activity, in turn, initiates a signal transduction cascade that results in a variety of biochemical changes within the cell - a rise in intracellular calcium levels, increased glycolysis and protein synthesis, and increases in the expression of certain genes including the gene for EGFR - that ultimately lead to DNA synthesis and cell proliferation.
Gene ID 1950
Alternative Epidermal Growth Factor; HOMG4; URG; Pro-epidermal growth factor; EGF
Accession NP_001954.2

Image & description

Fig.SDS-PAGE analysis of Human EGF protein.

Fig.SDS-PAGE analysis of Human EGF protein.

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