Recombinant Rat EGF (carrier-free)

Pricing & Availability
Other Names
Urogastrone (URG), HOMG4, Epidermal Growth Factor
Ave. Rating
Submit a Review
Product Citations
publications
EGF_Rat_RECOM_BA_122314
Inhibition of A431 cell proliferation by rat EGF.
  • EGF_Rat_RECOM_BA_122314
    Inhibition of A431 cell proliferation by rat EGF.
See competitor comparison data...
Cat # Size Price Quantity Avail. Save
558902 10 µg 40€
Check Availability


Need larger quantities of this item?
Request Bulk Quote
558904 25 µg 72€
Check Availability


Need larger quantities of this item?
Request Bulk Quote
558906 100 µg 148€
Check Availability


Need larger quantities of this item?
Request Bulk Quote
558908 500 µg 516€
Check Availability


Need larger quantities of this item?
Request Bulk Quote
Description

Rat EGF was initially isolated from the submaxillary gland of the rat. EGF is a member of the EGF family which comprises of TGF-α, heparin-binding EGF like-growth factor (HB-EGF), epigen, epiregulin, betacellulin, neuroregulin, and tomoregulin. All the EGF family members are synthesized as Type I membrane protein precursors, which can undergo proteolytic cleavage at the plasma membrane to release a mature soluble ectodomain. EGF ligands bind to the ErbB receptors and induce a conformational change in the extracellular domain, which enables homodimer or heterodimer formations that activate the intracellular kinase domain. The EGFR family, ErbB receptors, contains four members that belong to the receptor tyrosine kinase superfamily: EGFR (ErbB1/HER-1), ErbB2 (neu/HER-2), ErbB3 (HER-3), and ErbB4 (HER-4). EGF primarily induces the formation of EGFR/EGFR homodimers and EGFR/ErbB2 heterodimers. EGF is a potent regulator of cell growth and differentiation in multiple tissues. It plays important roles in the regulation of biological processes such as neoplasia, wound healing, gastrointestinal maturation, and nutrient absorption. It is also involved in regulating kidney blood circulation and ion transport. It has been suggested that EGF-ErbB signaling pathways might be key factors in the progress of renal lesions including effects on the regulation of sodium reabsorption in the collecting ducts.

Product Details
Technical data sheet

Product Details

Reactivity
Rat
Source
Rat EGF, amino acids Met-(Asn974-Arg1026) (Accession# NM_012842), was expressed in E. coli.
Molecular Mass
The 54 amino acid recombinant protein has a predicted molecular mass of approximately 6.2 kD. The protein migrates at approximately 9 kD in DTT-reducing conditions and at approximately 12 kD in non-reducing conditions by SDS-PAGE. The predicted N-terminal amino acid is Met.
Purity
>95%, as determined by Coomassie stained SDS-PAGE.
Formulation
0.22 µm filtered protein solution is in PBS, pH 7.2.
Endotoxin Level
Less than 0.01 ng per µg cytokine as determined by the LAL method.
Concentration
10 and 25 µg sizes are bottled at 200 µg/mL. 100 µg size and larger sizes are lot-specific and bottled at the concentration indicated on the vial (please contact technical support for concentration, or use our Lookup tool if you have a lot number.)
Please note, new lots of the 100 µg size will be lot-specific and may differ from previous lots that had a fixed concentration.
Storage & Handling
Unopened vial can be stored between 2°C and 8°C for one month, at -20°C for six months, or at -70°C for one year. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C to -70°C. Stock solutions can also be prepared at 50 - 100 µg/mL in sterile buffer (PBS, HPBS, DPBS, or EBSS) containing carrier protein such as 0.2 - 1% BSA or HSA and stored in working aliquots at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
Activity
ED50 = 0.4 - 2 ng/ml, corresponding to a specific activity of 0.5 - 2.5 x 106 units/mg, as determined by induction of the cytotoxic effect on human A431 epidermoid carcinoma cells.
Application

Bioassay

Application Notes

BioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue-ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are validated in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at tech@biolegend.com.

Antigen Details

Structure
Growth factor.
Distribution
Mammary gland cells, macrophages, gut epithelial cells, cells in the nervous system, and kidney.
Function
EGF is a potent regulator of cell growth and differentiation in several tissues. It is induced by NGF in pancreatic B cells.
Interaction
Epithelial cells, epidermal cells, and fibroblasts.
Ligand Receptor
EGFR/EGFR homodimer and EGFR/ErbB2 heterodimer.
Bioactivity
Induces cytotoxic effect on human A431 epidermoid carcinoma cells.
Cell Type
Neural Stem Cells, Mesenchymal Stem Cells, Hematopoietic stem and progenitors, Embryonic Stem Cells
Biology Area
Cell Biology, Immunology, Innate Immunity, Neuroscience, Stem Cells, Synaptic Biology
Molecular Family
Growth Factors, Cytokines/Chemokines
Antigen References

1. Simpson RJ, et al. 1985. Eur. J. Biochem. 153:629.
2. Gezginci-Oktayoglu S, et al. 2012. Diabetes Metab. Res. Rev. 28:654.
3. Rousselet E, et al. 2011. J. Biol. Chem. 286:9185.
4. Staruschenko A, et al. 2013. Am. J. Physiol. Renal Physiol. 305:F12.

Gene ID
25313 View all products for this Gene ID
UniProt
View information about EGF on UniProt.org

Related FAQs

Does specific activity of a recombinant protein vary between lots?

Specific activity will vary for each lot and for the type of experiment that is done to validate it, but all passed lots will have activity within the established ED50 range for the product and we guarantee that our products will have lot-to-lot consistency. Please conduct an experiment-specific validation to find the optimal ED50 for your system.

Have your recombinants been tested for stability?

Our testing shows that the recombinant proteins are able to withstand room temperature for a week without losing activity. In addition the recombinant proteins were also found to withstand four cycles of freeze and thaw without losing activity.

How do you convert activity as an ED50 in ng/ml to a specific activity in Units/mg?
Use formula Specific activity (Units/mg) = 10e6/ ED50 (ng/mL)
How does the activity of your recombinant proteins compare to competitors?

We quality control each and every lot of recombinant protein. Not only do we check its bioactivity, but we also compare it against other commercially available recombinant proteins. We make sure each recombinant protein’s activity is at least as good as or better than the competition’s. In order to provide you with the best possible product, we ensure that our testing process is rigorous and thorough. If you’re curious and eager to make the switch to BioLegend recombinants, contact your sales representative today!

What is the specific activity or ED50 of my recombinant protein?

The specific activity range of the protein is indicated on the product datasheets. Because the exact activity values on a per unit basis can largely fluctuate depending on a number of factors, including the nature of the assay, cell density, age of cells/passage number, culture media used, and end user technique, the specific activity is best defined as a range and we guarantee the specific activity of all our lots will be within the range indicated on the datasheet. Please note this only applies to recombinants labeled for use in bioassays. ELISA standard recombinant proteins are not recommended for bioassay usage as they are not tested for these applications.

Go To Top Version: 1    Revision Date: 12.29.2014

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.

 

*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, www.biolegend.com/ordering#license). BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.

 

BioLegend Inc., 8999 BioLegend Way, San Diego, CA 92121 www.biolegend.com
Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

Login / Register
Forgot your password? Reset password?
Create an Account