Monoclonal anti p53 (PAb122)

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Catalog #: BNUB0338
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Product Description

PAb122 binds to the C-terminus (aa370-378) of both wild type and mutated p53. When microinjected into nuclei, PAb122 blocked re-entry into the S-phase of the cell cycle. Mutation and/or allelic loss of p53 is one of the causes of a variety of mesenchymal and epithelial tumors. If it occurs in the germ line, such tumors run in families. p53 Binds to a DNA consensus sequence, the p53 response element, and it regulates normal cell growth cycle events by activating transcription of genes, involved either in progression through the cycle, or causing arrest in G1 when the genome is damaged. In most transformed and tumor cells the concentration of p53 is increased 51000 fold over the minute concentrations (1000 molecules cell) in normal cells, principally due to the increased half-life (4 h) compared to that of the wild-type (20 min). p53 Localizes in the nucleus, but is detectable at the plasma membrane during mitosis and when certain mutations modulate cytoplasmic/nuclear distribution. p53 Is the most commonly mutated gene in spontaneously occurring human cancers. Mutations arise with an average frequency of 70% but incidence varies from zero in carcinoid lung tumors to 97% in primary melanomas. High concentrations of p53 protein are transiently expressed in human epidermis and superficial dermal fibroblasts following mild ultraviolet irradiation.

Gurney EG et. al. Journal of Virology, 1980, 34(3):752-63

Additional Information


Purified with BSA, 0.2 mg/mL, Purified, BSA-free, 1 mg/mL, CF405S, CF405M, CF488A, CF543, CF555, CF568, CF594, CF640R, CF647, CF660R, CF680, CF680R, CF770, Biotin, R-PE, APC, Per-CP, Alkaline Phosphatase, HRP


50 uL, 100 uL, 250 uL, 500 uL

Supplied As

Purified: 0.2 mg/mL in PBS/0.05% BSA/0.05% azide, Purified, BSA-free: 1 mg/mL in PBS without azide, Conjugates: 0.1 mg/mL in PBS/0.1% BSA/0.05% azide, HRP conjugates: 0.1 mg/mL in PBS/0.05% BSA

Antibody type


Host species


Reactivity (target)

p53 (PAb122)






IgG2b, kappa

Molecular weight

53 kDa


Antigen NY-CO-13, BCC7, Cellular Tumor Antigen p53, LFS1, TP53, Transformation Related Protein 53 (TRP53), Tumor Protein p53, Tumor Suppressor p53

Entrez gene ID





SV40-transformed mouse B4 cells



Species reactivity

Dog, Hamster, Human, Monkey, Mouse, Rat


Immunohistology (frozen), Flow cytometry, Immunofluorescence

Cellular localization

Predominantly nuclear

Application notes

Flow Cytometry (0.5-1 ug/million cells/0.1 mL), Immunofluorescence 0.5-1 ug/mL, Immunohistology Frozen Only 0.5-1.0 ug/mL for 30 minutes at RT, Optimal dilution for a specific application should be determined by user

Positive control

MDA-MB-231 or A431 Cells. Breast or Colon carcinoma

MSDS (PDF):MSDS Primary antibodies

Protocol (PDF): Protocols for antibody-based detection

Shipment Method: Shipping and handling methods will be assessed and calculated at time of shipment based upon item(s) storage temperature conditions.

Expedited shipment may be requested at time of checkout.

Please note that products with recommended storage at 4°C or -20°C may ship at ambient temperature. This will not affect product performance. When you receive the product, place it under the recommended storage conditions.

More information about product handling and shelf life