| Field | Specification |
|---|---|
| Target | |
| Alternative names | Receptor tyrosine-protein kinase erbB-2;2.7.10.1;Metastatic lymph node gene 19 protein;MLN 19;Proto-oncogene Neu;Proto-oncogene c-ErbB-2;Tyrosine kinase-type cell surface receptor HER2;p185erbB2;CD340;ERBB2;HER2, MLN19, NEU, NGL; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human HER2/ERBB2 recombinant protein (Position: T23-H193). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets receptor tyrosine-protein kinase erbB-2 (gene ERBB2) in human and mouse samples and is validated for Western blot, IHC and ELISA. The predicted molecular weight is 137.9 kDa, and the supplier reports an observed band at about 185 kDa.
HER2 (ERBB2) is a receptor tyrosine kinase of the EGFR family that has no known ligand of its own but is the preferred partner for other ErbB receptors. Heterodimers containing HER2 signal strongly through MAPK and PI3K-AKT pathways. HER2 amplification drives a subset of breast and gastric cancers, making it one of the most studied oncology targets.
| Target | Receptor tyrosine-protein kinase erbB-2 (gene ERBB2; UniProt P04626, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 137.9 kDa |
| Observed MW | 185 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Human, Mouse) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): human HeLa cells, human MCF-7 cells, mouse NIH/3T3 cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human breast cancer tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Immunogen
Recombinant human HER2/ERBB2 fragment (Thr23–His193), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human and mouse. UniProt places receptor tyrosine-protein kinase erbB-2 in the cell membrane and cell projection. Tissue expression noted by UniProt (human): Expressed in a variety of tumor tissues including primary breast tumors and tumors from small bowel, esophagus, kidney and mouth. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
Xin-Yu Song et al. (2025) Role of c-Myc-Regulated miR-196a-5p in the Progression of Triple-Negative Breast Cancer: Potential Involvement of HOXA7 and HOXB7. Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis. 10.1016/j.mrfmmm.2025.111923
