| Field | Specification |
|---|---|
| Target | |
| Alternative names | Receptor-binding cancer antigen expressed on SiSo cells;Cancer-associated surface antigen RCAS1;Estrogen receptor-binding fragment-associated gene 9 protein;EBAG9;RCAS1; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human EBAG9 recombinant protein (Position: R31-S213). Human EBAG9 shares 97.8% and 94.5% amino acid (aa) sequence identity with mouse and rat EBAG9, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody detects receptor-binding cancer antigen expressed on SiSo cells (gene EBAG9) in human, mouse and rat samples and is validated for IHC and Western blot. The predicted molecular weight is 24.4 kDa, and the supplier reports an observed band at about 34 kDa.
EBAG9 (also called RCAS1) is a Golgi-associated membrane protein originally identified as an estrogen-responsive cancer antigen. It has been reported to suppress cell proliferation and promote apoptosis, and it is studied in tumor biology and immune regulation.
| Target | Receptor-binding cancer antigen expressed on SiSo cells (gene EBAG9; UniProt O00559, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 0.9 mg NaCl; 0.2 mg Na2HPO4; 0.05 mg NaN3; plus stabilizers |
| Calculated MW | 24.4 kDa |
| Observed MW | 34 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
| IHC (paraffin sections) | 0.5–1 µg/mL (Human, Mouse, Rat) |
|---|---|
| Western blot | 0.1–0.5 µg/mL (Human, Rat) |
Samples with a confirmed band (WB): rat testis tissue, 22RV1 cells, HeLa cells, MCF-7 cells, Jurkat cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE, 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): mouse testis tissue, rat testis tissue, human prostatic 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 EBAG9 fragment (Arg31–Ser213), expressed in E. coli. Sequence identity with the mouse and rat orthologs: 97.8% and 94.5%, respectively.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places receptor-binding cancer antigen expressed on SiSo cells in the Golgi apparatus membrane. Tissue expression noted by UniProt (human): Widely expressed. 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.
