Human Phospho-ErbB2/Her2 (Y1248) Antibody

Catalog # Availability Size / Price Qty
AF1768
AF1768-SP
Detection of Human Phospho-ErbB2/Her2 (Y1248) by Western Blot.
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Citations (2)
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Human Phospho-ErbB2/Her2 (Y1248) Antibody Summary

Species Reactivity
Human
Specificity
Detects human ErbB2 when phosphorylated at Y1248.
Source
Polyclonal Rabbit IgG
Purification
Antigen Affinity-purified
Immunogen
Phosphopeptide containing human ErbB2 Y1248 site
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Western Blot
0.25 µg/mL
See below
Simple Western
5 µg/mL
See below
Immunohistochemistry
5-15 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Examples

Western Blot Detection of Human Phospho-ErbB2/Her2 (Y1248) by Western Blot. View Larger

Detection of Human Phospho-ErbB2/Her2 (Y1248) by Western Blot. Western blot shows lysates of MDA‑MB‑468 human breast cancer cell line and A431 human epithelial carcinoma cell line untreated (-) or treated (+) with 1 mM Pervanadate (PV) for 10 minutes or with 10 ng/mL Recombinant Human EGF (Catalog #
236-EG) for 5 minutes. PVDF membrane was probed with 0.25 µg/mL of Rabbit Anti-Human Phospho-ErbB2/Her2 (Y1248) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1768) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for Phospho-ErbB2/Her2 (Y1248) at approximately 170 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Simple Western Detection of Human Phospho-ErbB2/Her2 (Y1248) by Simple WesternTM. View Larger

Detection of Human Phospho-ErbB2/Her2 (Y1248) by Simple WesternTM. Simple Western lane view shows lysates of A431 human epithelial carcinoma cell line untreated (-) or treated (+) with 10 ng/mL Recombinant Human EGF (Catalog # 236-EG) for 5 minutes, loaded at 0.2 mg/mL. A specific band was detected for Phospho-ErbB2/Her2 (Y1248) at approximately 265 kDa (as indicated) using 5 µg/mL of Rabbit Anti-Human Phospho-ErbB2/Her2 (Y1248) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1768). This experiment was conducted under reducing conditions and using the 66-440 kDa separation system.

Immunohistochemistry ErbB2/Her2 in Human Breast Cancer Tissue. View Larger

ErbB2/Her2 in Human Breast Cancer Tissue. ErbB2/Her2 phosphorylated at Y1248 was detected in immersion fixed paraffin-embedded sections of human breast cancer tissue using Rabbit Anti-Human Phospho-ErbB2/Her2 (Y1248) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1768) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Rabbit HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS005) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: ErbB2/Her2

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).

References
  1. Coussens, L. et. al. (1985) Science 230:1132.
  2. Yamamoto, T. et. al. (1986) Nature 319:230.
  3. Kanai, Y. et. al. (1995) Biochem. Biophys. Res. Commun. 208:1067.
  4. Codony-Servat, J. et. al. (1999) Cancer Res. 59:1196.
  5. Carraway, K.L. 3rd et. al.  (1994) J. Biol. Chem. 269:14303.
  6. Emkey, R. and C.R. Kahn (1997) J. Biol. Chem. 272:31172.
  7. Schaefer, G. et. al. (1999) J. Biol. Chem. 274:859.
  8. Schlessinger, J. (2000) Cell 103:211.
  9. Hellyer, N.J. et. al. (2001) J. Biol. Chem. 276:42153.
  10. Daly, R.J. (1999) Growth Factors 16:255.
Long Name
Receptor Tyrosine Protein Kinase ErbB2
Entrez Gene IDs
2064 (Human); 13866 (Mouse); 24337 (Rat)
Alternate Names
CD340 antigen; CD340; c-erb B2/neu protein; EC 2.7.10; EGFR2; ErbB2; HER2; HER-2; HER2EC 2.7.10.1; herstatin; Metastatic lymph node gene 19 protein; MLN 19; MLN19; Neu Oncogene; NEUHER-2/neu; neuroblastoma/glioblastoma derived oncogene homolog; NGL; NGLTKR1; p185erbB2; Proto-oncogene c-ErbB-2; Proto-oncogene Neu; receptor tyrosine-protein kinase erbB-2; TKR1; Tyrosine kinase-type cell surface receptor HER2; v-erb-b2 avian erythroblastic leukemia viral oncogene homolog 2(neuro/glioblastoma derived oncogene homolog); v-erb-b2 erythroblastic leukemia viral oncogene homolog 2, neuro/glioblastomaderived oncogene homolog (avian)

Product Datasheets

Citations for Human Phospho-ErbB2/Her2 (Y1248) Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

2 Citations: Showing 1 - 2
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  1. Modulation of ErbB2 blockade in ErbB2-positive cancers: the role of ErbB2 Mutations and PHLDA1.
    Authors: Li, Guangyua, Wang, Xiaoqi, Hibshoosh, Hanina, Jin, Cheng, Halmos, Balazs
    PLoS ONE, 2014;9(9):e106349.
    Species: Human
    Sample Types: Cell Lysates
    Applications: WB
  2. Osteoblast-derived factors induce an expression signature that identifies prostate cancer metastasis and hormonal progression.
    Authors: Wang G, Haile S, Comuzzi B, Tien AH, Wang J, Yong TM, Jelescu-Bodos AE, Blaszczyk N, Vessella RL, Masri BA, Sadar MD
    Cancer Res., 2009;69(8):3433-42.
    Species: Human
    Sample Types: Cell Lysates
    Applications: WB

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