1 μg/lane of Recombinant Human ErbB2 Fc Chimera was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing major bands at 125-130 kDa and 220-250 kDa, ...read more
Recombinant Human ErbB2/Her2 Fc Chimera Protein, CF Summary
Details of Functionality
Measured by its ability to block anti-ErbB2 mediated inhibition of SK‑BR‑3 human breast cancer cell proliferation. Brodowicz, T. et al. (1997) Int. J. Cancer 73:875. The ED50 for this effect is 0.3-1.2 μg/mL in the presence of 0.6 µg/mL Anti-Human ErbB2/Her2 Monoclonal Antibody
(Trastuzumab, Catalog #
Mouse myeloma cell line, NS0-derived human ErbB2/Her2 protein
>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
<0.10 EU per 1 μg of the protein by the LAL method.
96.8 kDa (monomer). Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
ErbB2, also called Neu and Her2 (human epidermal growth factor receptor 2), is a type I membrane glycoprotein that is a member of the ErbB family of tyrosine kinase receptors. ErbB family members serve as receptors for the epidermal growth factor (EGF) family of growth factors. ErbB2 is widely expressed in epithelial cells and has also been found to be over-expressed in a large number of breast carcinomas. Among ErbB family members, ErbB2 is unique in that it has no identified ligands. Rather, ErbB2 heterodimerizes with the other members of the ErbB family (ErbB1 (EGFR), ErbB3, ErbB4) to form higher affinity signaling complexes. Because ErbB3 contains a defective kinase domain, the kinase domain of ErbB2 is responsible for initiating the tyrosine phosphorylation signal through the heterodimeric receptor. It has been found that a discrete three amino acid signal in the ErbB3 cytoplasmic domain is critical for transactivation of ErbB2. Interestingly, this same three amino acid signal has also been found in ErbB1 and ErbB4. Phosphoinositide 3-kinase has been shown to play a role in ErbB2 signal transduction. The cytoplasmic domain of ErbB2 has been shown to associate with beta-catenin and plakoglobin. Human ErbB2 consists of 1255 amino acids (aa) with a 21 aa signal sequence, a 631 aa extracellular domain, a 23 aa transmembrane region, and a 580 aa cytoplasmic domain. ErbB2 can be shed from the cell surface by proteolytic cleavage by an unidentified protease. ErbB2 appears to play roles in development, cancer, communication at the neuromuscular junction and regulation of cell growth and differentiation (1-10).
Coussens, L. et. al. (1985) Science 230:1132.
Yamamoto, T. et. al. (1986) Nature 319:230.
Kanai, Y. et. al. (1995) Biochem. Biophys. Res. Commun. 208:1067.
Codony-Servat, J. et. al. (1999) Cancer Res. 59:1196.
Carraway, K.L. 3rdet. al. (1994) J. Biol. Chem. 269:14303.
Emkey, R. and C.R. Kahn (1997) J. Biol. Chem. 272:31172.
Schaefer, G. et. al. (1999) J. Biol. Chem. 274:859.
Schlessinger, J. (2000) Cell 103:211.
Hellyer, N.J. et. al. (2001) J. Biol. Chem. 276:42153.
There are no reviews for ErbB2/Her2 (1129-ER).
By submitting a review you will receive an Amazon e-Gift Card or Novus Product Discount.
Review with no image -- $10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen
Review with an image -- $25/€18/£15/$25 CAD/¥150 Yuan/¥2500 Yen
FAQs for ErbB2/Her2 (1129-ER). (Showing 1 - 1 of 1 FAQs).
I am interested in getting antibodies for HER that would work in flow cytometry. Could you recommend some choices?
A list of our ErbB2 antibodies validated for use in flow cytometry can be found here /productsearch/HER2#fq=common_name%3A%22ErbB2%2FHER2%22&fq=category%3A%22Primary%20Antibodies%22&fq=applications%3A%22Flow%20Cytometry%22
The concentration calculator allows you to quickly calculate the volume, mass or concentration of your vial. Simply enter your mass, volume, or concentration values for your reagent and the calculator will determine the rest.
Review this Product
Be the first to review our Recombinant Human ErbB2/Her2 Fc Chimera Protein, CF and receive a gift card or discount.
PRODUCT AVAILABILITY: Update Regarding the Evolving COVID-19 Situation
Bio-Techne appreciates the critical role that you and our products and services play in research efforts to further scientific innovation and discovery. We are continually assessing our manufacturing and supplier capabilities during the COVID-19 situation and are implementing precautionary measures to ensure uninterrupted supply of products and services. Currently, and as we abide by local shelter in place orders across the world, we are fully operational and do not anticipate any material supply disruptions across our Bio-Techne brands and product lines. As the situation evolves, our goal is to utilize preventive measures to reduce the threat that COVID-19 poses to our ability to meet the needs of our customers globally.