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Pack Size:100μg/vial
Validated Species:Human, Mouse, Rat
Application:IHC, ICC, WB
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Product Name Anti-53BP1 Antibody
SKU/Catalog Number PA1976
Description Rabbit IgG polyclonal antibody for Tumor suppressor p53-binding protein 1(TP53BP1) detection. Tested with WB, IHC-P, ICC in Human;Mouse;Rat.
Cite This Product Anti-53BP1 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1976)
Replacement Item This antibody may replace the following items: sc-10911|sc-10914|sc-10915|sc-109897|sc-22760 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human, Mouse, Rat
Predicted Species Hamster

*This antibody is predicted to react with the above species based on antigen sequence similarities. Our Boster Guarantee covers the use of this product with the above species.

Application IHC, ICC, WB

*Our Boster Guarantee covers the use of this product in the above tested applications.

**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.

Recommended Detection Systems Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot, and HRP Conjugated anti-Rabbit IgG Super Vision Assay Kit (SV0002-1) for IHC(P) and ICC.
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2018!
Immunogen A synthetic peptide corresponding to a sequence at the C-terminus of human 53BP1(1955-1972aa ERIGFKQHPKYKHDYVSH), identical to the related mouse sequence.
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial


Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
Concentration Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Storage At -20°C for one year. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for a longer time.Avoid repeated freezing and thawing.
Purification Immunogen affinity purified.
Isotype N/A

Protein Target Info (Source:

You can check the tissue specificity below for information on selecting positive and negative control.

Gene Name TP53BP1
Protein Name Tumor suppressor p53-binding protein 1
Molecular Weight 213574 MW
Protein Function Plays a key role in the response to DNA damage. May have a role in checkpoint signaling during mitosis. Enhances TP53- mediated transcriptional activation. .
Sequence Similarities Contains 2 BRCT domains.
Subcellular Localization Nucleus. Chromosome, centromere, kinetochore. Associated with kinetochores. Both nuclear and cytoplasmic in some cells. Recruited to sites of DNA damage, such as double stand breaks. H4K20me2 is required for efficient localization to double strand breaks and removal of proteins that have a high affinity for H4K20me2 such as L3MBTL1 and KDM4A is needed.
Uniprot ID Q12888
Alternative Names Tumor suppressor p53-binding protein 1;53BP1;p53-binding protein 1;p53BP1;TP53BP1;
Research Areas |epigenetics and nuclear signaling|dna / rna|dna damage & repair|dna damage response|p53| epigenetics and nuclear signaling|brct domain proteins| cancer|oncoproteins/suppressors|tumor suppressors|p53 pathway|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for Tumor suppressor p53-binding protein 1

TP53BP1(Tumor Protein p53-Binding Protein 1), also called 53BP1, is a protein that in humans is encoded by the TP53BP1 gene. Iwabuchi et al.(1998) mapped the TP53BP1 gene to 15q15-q21 by FISH. Iwabuchi et al.(1994) showed that TP53BP1 binds to the conformationally sensitive central domain of wildtype p53 but not to mutant p53 in vitro. Immunoblot analysis by Iwabuchi et al.(1998) showed that expression of TP53BP1 or TP53BP2 enhances the transactivation function of p53 and induces the expression of p21(CDKN1A). Wang et al.(2002) used small interfering RNA directed against TP53BP1 in mammalian cells to demonstrate that TP53BP1 is a key transducer of the DNA damage checkpoint signal. TP53BP1 was required for p53 accumulation, G2/M checkpoint arrest, and the intra-S-phase checkpoint in response to ionizing radiation.

Anti-53BP1 Antibody Images

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Anti-53BP1 Antibody
Anti-53BP1 antibody, PA1976, Western blotting
Lane 1: 293T Cell Lysate
Lane 2: U20S Cell Lysate
Lane 3: HEPA Cell Lysate
Anti-53BP1 Antibody
Anti-53BP1 antibody, PA1976, IHC(P)
IHC(P): Human Intestinal Cancer Tissue
Anti-53BP1 Antibody
Anti-53BP1 antibody, PA1976, IHC(P)
IHC(P): Rat Brain Tissue
Anti-53BP1 Antibody
Anti-53BP1 antibody, PA1976, IHC(P)
IHC(P): Mouse Brain Tissue
Anti-53BP1 Antibody
Anti-53BP1 antibody, PA1976, ICC
ICC: A549 Cell
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Customer Q&As

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at for more information about BSA-free antibodies and availability. The new BSA-free formula uses trehalose as a replacement to BSA. We have tested many alternative chemicals and found that trehalose protects the antibodies the best.
Q: Is your western blot protocol provided from the website applicable for all your antibodies? Keyword: applications, WB
A: The protocol is applicable for all our antibodies in WB, the NC Membrane(0.45μm or 0.22μm) and transfer time(70 mins or 50 mins) depends on the protein molecular weight, details can be found in included protocol.
Q: Can I conjugate markers to this antibody? Can I link custom conjugates to this antibody? Keyword: conjugation
A: The antibody is stored with BSA and cannot be conjugated with markers. Carrier free antibodies are available upon request. Please contact
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the immunogen sequence of this antibody? Is this antibody polyclonal or monoclonal?
A: You can find the immunogen sequence under "Immunogen" and clonality in the product name.
Q: What is the expected band size? Why is it different than the observed band size?
A: The expected band size is predicted on the size of the protein. The actual band size may be affected by a few other factors including but not limited to:
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands

3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.

4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,
Q: What is the suggested dilution ratio for Western Blot (WB), Immunohistochemistry (IHC) and or ELISA standards? What is the optimal pH for the sample?
A: Check the datasheet for the product for details on dilution ratios for different experiments. You can find the datasheet button on the right side of the product page.
Q: What is the protocol you used for your Western blotting (WB) and Immunohistochemistry (IHC)?
A: Check our protocols under the tech support tab.
Q: What are some alternative names that could be used to describe this product?
A: Some common names include but are not limited to 53bp1 antibody, p53bp1 antibody