Summary

Name TP53BP1
Full Name TP53-binding protein 1
Synonyms 53BP1, p53-binding protein 1, p53BP1
Primary ID Q12888
Links - -
Type protein
Relations 33
Pathways DNA repair in cancer
Function 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:22553214, PubMed:23333306, PubMed:17190600, PubMed:21144835, PubMed:28241136). 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:23727112, PubMed:23333306). 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:23760478, PubMed:28241136, PubMed:17190600). 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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Modifications Tables

Relations

Regulator Mechanism target score
+ up-regulates activity img/direct-activation.png ubiquitination TP53BP1 0.612
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation TP53BP1 0.873
Publications: 4 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ up-regulates activity img/direct-activation.png phosphorylation TP53BP1 0.409
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png dephosphorylation TP53BP1 0.357
Publications: 2 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.596
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation TP53BP1 0.282
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.547
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.6
Publications: 1 Organism: In Vitro
+ img/unknown.png phosphorylation TP53BP1 0.873
Publications: 4 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.2
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.2
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.28
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.2
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.2
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png dephosphorylation TP53BP1 0.392
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding RIF1 0.685
Publications: 1 Organism: Mus Musculus
Pathways:DNA repair in cancer
+ up-regulates img/direct-activation.png phosphorylation TP53BP1 0.4
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.2
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png binding H4C1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png sumoylation TP53BP1 0.636
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.403
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png ubiquitination TP53BP1 0.821
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png sumoylation TP53BP1 0.495
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png relocalization TP53BP1 0.623
Publications: 1
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png relocalization TP53BP1 0.269
Publications: 1 Organism: Homo Sapiens