Human Phospho-p53 (S37) Antibody

Catalog #: AF3306 Datasheet

Catalog #	Availability	Size / Price	Qty
AF3306
AF3306-SP

Detection of Human Phospho-p53 (S37) by Western Blot.

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Human Phospho-p53 (S37) Antibody Summary

Species Reactivity

Human

Specificity

Detects human p53 when phosphorylated at S37. Does not recognize p53 unphosphorylated at S37.

Source

Polyclonal Rabbit IgG

Purification

Antigen Affinity-purified

Immunogen

Phosphopeptide containing human p53 S37 site

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Western Blot

0.4 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.

Scientific Data

Western Blot

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Detection of Human Phospho-p53 (S37) by Western Blot. Western blot shows p53 immunoprecipitated from lysates of MCF-7 human breast cancer cell line using Human/Mouse/Rat p53 Agarose-conjugated Antigen Affinity-purified Polyclonal Antibody (Catalog # GAF1355). MCF-7 cell line was untreated (-) or treated (+) with 1 µM camptothecin (CPT) for 5 hours. PVDF membrane was probed with 0.4 µg/mL Rabbit Anti-Human Phospho-p53 (S37) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3306) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band for Phospho-p53 (S37) was detected at approximately 53 kDa (as indicated). The phospho-specificity of this antibody was supported by decreased labeling following treatment with 600 U lambda-phosphatase (lambda-PPase) for 1 hour. For additional reference the membrane was stripped and reprobed with 1:5000 dilution of Human/Mouse/Rat p53 HRP-conjugated Antigen Affinity-purified Polyclonal Antibody (lower panel, Catalog # HAF1355) This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Preparation and Storage

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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: p53

The p53 tumor suppressor protein acts to enforce cell cycle checkpoints or signal apoptosis in cells that have incurred genotoxic damage. The ATR and DNA-PK_CS kinases phosphorylate p53 at serine 37 in response to UV light and other genotoxic stressors. This phosphorylation event results in increased p53 transcriptional activation.

Entrez Gene IDs

7157 (Human); 22059 (Mouse); 24842 (Rat)

Alternate Names

Antigen NY-CO-13; BCC7; FLJ92943; LFS1; LFS1TRP53; p53 tumor suppressor; p53; P53cellular tumor antigen p53; Phosphoprotein p53; TP53; transformation-related protein 53; TRP53; tumor protein p53; Tumor suppressor p53