| Field | Specification |
|---|---|
| Target | |
| Alternative names | Cellular tumor antigen p53;Antigen NY-CO-13;Phosphoprotein p53;Tumor suppressor p53;TP53;P53; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human P53 recombinant protein (Position: A74-D393). Human P53 shares 83% and 85% amino acid (aa) sequences identity with mouse and rat P53, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody recognizes cellular tumor antigen p53 (gene TP53) in human samples and is validated for Western blot, IHC and immunoprecipitation. The predicted molecular weight is 43.7 kDa, and the supplier reports an observed band at about 53 kDa.
p53 (TP53) is a tumor suppressor transcription factor that responds to DNA damage and other stresses by activating genes for cell cycle arrest, DNA repair, senescence or apoptosis. It is mutated in about half of human cancers, making it one of the most studied proteins in cancer biology, with rat models widely used alongside human cells.
| Target | Cellular tumor antigen p53 (gene TP53; UniProt P04637, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 43.7 kDa |
| Observed MW | 53 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 | 0.1–0.5 µg/mL (Human) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human) |
| Immunoprecipitation | 0.5–2 µg/mL (Human) |
Samples with a confirmed band (WB): human 293T cells, human T47D cells, human PC-9 cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 10% 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 colon cancer tissue, human ovarian 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).
Samples with a confirmed result (IP): 293T cells.
Immunogen
Recombinant human P53 fragment (Ala74–Asp393), expressed in E. coli. Sequence identity with the mouse and rat orthologs: 83% and 85%, respectively.
Reactivity Notes
The supplier lists reactivity with human. UniProt places cellular tumor antigen p53 in the cytoplasm, nucleus, endoplasmic reticulum and mitochondrion matrix. Tissue expression noted by UniProt (human): Ubiquitous. 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.
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