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Anti-53BP1 Antibody, clone 1H16 ZooMAb® Rabbit Monoclonal

enhanced validationgreener alternative

recombinant, expressed in HEK 293 cells

TP53-binding protein 1, p53-binding protein 1, p53BP1

biological source


Quality Level


expressed in HEK 293 cells



antibody form

purified antibody


recombinant monoclonal

product line

ZooMAb® learn more



mol wt

calculated mol wt 213.57 kDa
observed mol wt ~270 kDa

species reactivity

mouse, human


antibody small pack of 25 μL

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enhanced validation

recombinant expression
Learn more about Antibody Enhanced Validation


affinity binding assay: suitable
immunocytochemistry: suitable
immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
western blot: suitable



UniProt accession no.

greener alternative category

shipped in


storage temp.


General description

ZooMAb antibodies represent an entirely new generation of recombinant monoclonal antibodies.

Each ZooMAb antibody is manufactured using our proprietary recombinant expression system, purified to homogeneity, and precisely dispensed to produce robust and highly reproducible lot-to-lot consistency. Only top-performing clones are released for use by researchers. Each antibody is validated for high specificity and affinity across multiple applications, including its most commonly used application. ZooMAb antibodies are reliably available and ready to ship when you need them.

Learn more about ZooMAb here.


Clone 1H16 is a ZooMAb rabbit recombinant monoclonal antibody that specifically detects p53-binding protein 1. It targets an epitope within the N-terminal half.


His-tagged recombinant fragment corresponding to 250 amino acids from the N-terminal half of human p53-binding protein 1 (53BP1).


Quality Control Testing
Western Blotting Analysis: A 1:1,000 dilution of this antibody detected 53BP1 in HEK293 cell nuclear extract.Tested applicationsWestern Blotting Analysis: A 1:1,000 dilution from a representative lot detected 53BP1 in HeLa cell Nuclear Extract.Immunohistochemistry (Paraffin) Analysis: A 1:100 dilution from a representative lot detected 53BP1 in human kidney tissue sections.Affinity Binding Assay: A representative lot of this antibody bound recombinant 53BP1 protein fragment with a KD of 1.2 x 10-8 in an affinity binding assay. Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected 53BP1 in HeLa, A431, HepG2, NIH 3T3 cells.Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user
Anti-53BP1, clone 1H16 ZooMAb, Cat. No. ZRB1153, is a recombinant Rabbit monoclonal antibody that specifically targets 53BP1 and is tested for use in Affinity Binding Assay, Immunocytochemistry, Immunohistochemistry (Paraffin), and Western Blotting.

Target description

TP53-binding protein 1 (UniProt: Q12888; also known as 53BP1, p53-binding protein 1, p53BP1) is encoded by the TP53BP1 gene (Gene ID: 7158) in human. 53BP1 is a homooligomeric double-strand break (DSB) repair protein that is involved in response to DNA damage and promotes non-homologous end joining (NHEJ)-mediated repair. It counteracts the function of the homologous recombination (HR) repair protein BRCA1. In response to DSB it undergoes phosphorylation by ATM, which promotes interaction with RIF1 and dissociation from NUDT16L1/TIRR, leading to recruitment to DSBs sites where it binds histone H2A monoubiquinated at lysine 15 (H2AK15Ub) and histone H4 dimethylated at lysine 20 (H4K20me2). Its Tudor-like region (aa 1484-1603) mediates its binding to H4K20m3e2. In the absence of DNA damage, it is phosphorylated at basal level, but following DSB and phosphorylation by ATM it interacts with PAX-interacting protein 1 (PAXIP1) and non-homologous end joining of dysfunctional telomeres. Three isoforms of 53BP1 have been described that are produced by alternative splicing. This ZooMAb recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals. (Ref.: Panier, S., and Boulton, S. (2014). Nat Rev Mol Cell Biol 15(1); 7-18).

Physical form

Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS with 5% Trehalose, normal appearance a coarse or translucent resin. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 μL.


30 μg/mL after reconstitution at 25 μL per vial. Please refer to guidance on suggested starting dilutions and/or titers per application and sample type.

Storage and Stability

Recommend storage of lyophilized product at 2-8°C; Before reconstitution, micro-centrifuge vials briefly to spin down material to bottom of the vial; Reconstitute each vial by adding 25 μL of filtered lab grade water or PBS; Reconstituted antibodies can be stored at 2-8°C, or -20°C for long term storage. Avoid repeated freeze-thaws.

Legal Information

ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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