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Product Name
Phospho-53BP1 (Ser25) Rabbit pAb
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Gene ID
7158
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SwissProt ID
Q12888
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Gene Name
TP53BP1
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Alternative Names
P531, TP53B, TP53BP1, TRP53BP1, Tumor suppressor p53-binding protein 1, p53-binding protein 1
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Background
Double-strand break (DSB) repair protein involved in response to DNA damage, telomere dynamics and class-switch recombination (CSR) during antibody genesis (PubMed:12364621, PubMed:17190600, PubMed:21144835, PubMed:22553214, PubMed:23333306, PubMed:27153538, PubMed:28241136, PubMed:31135337, PubMed:37696958).
Plays a key role in the repair of double-strand DNA breaks (DSBs) in response to DNA damage by promoting non-homologous end joining (NHEJ)-mediated repair of DSBs and specifically counteracting the function of the homologous recombination (HR) repair protein BRCA1 (PubMed:22553214, PubMed:23333306, PubMed:23727112, PubMed:27153538, PubMed:31135337).
In response to DSBs, phosphorylation by ATM promotes interaction with RIF1 and dissociation from NUDT16L1/TIRR, leading to recruitment to DSBs sites (PubMed:28241136).
Recruited to DSBs sites by recognizing and binding histone H2A monoubiquitinated at 'Lys-15' (H2AK15Ub) and histone H4 dimethylated at 'Lys-20' (H4K20me2), two histone marks that are present at DSBs sites (PubMed:17190600, PubMed:23760478, PubMed:27153538, PubMed:28241136).
Required for immunoglobulin class-switch recombination (CSR) during antibody genesis, a process that involves the generation of DNA DSBs (PubMed:23345425).
Participates in the repair and the orientation of the broken DNA ends during CSR (By similarity).
In contrast, it is not required for classic NHEJ and V(D)J recombination (By similarity).
Promotes NHEJ of dysfunctional telomeres via interaction with PAXIP1 (PubMed:23727112).
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Research Field
Epigenetics and Nuclear Signaling
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Product Categories
Primary antibody
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Host
Rabbit
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Reactivity
Human,Mouse,Rat
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Application
IHC-P,ICC/IF
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Dilution Ratio
IHC: 1/50-1/100 ICC/IF: 1/100-1/500
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Molecular Weight
Calculated MW: 213 kDa
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Clonality
Polyclonal Antibody
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Isotype
IgG
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Immunogen
The antiserum was produced against synthesized phosphopeptide derived from human 53BP1 around the phosphorylation site of serine 25 (E-D-SP-Q-P).
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Purification
Affinity Purified
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Conjugation
Unconjugated
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Modification
Phosphorylated
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Form
liquid
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Buffer System
Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
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Storage
Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze/thaw cycles.