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 0.621
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation TP53BP1 0.874
Publications: 4 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ up-regulates activity img/direct-activation.png phosphorylation TP53BP1 0.422
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.608
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png dephosphorylation TP53BP1 0.363
Publications: 2 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation TP53BP1 0.288
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.554
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.61
Publications: 1 Organism: In Vitro
+ img/unknown.png phosphorylation TP53BP1 0.874
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 0.283
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 phosphorylation TP53BP1 0.2
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png dephosphorylation TP53BP1 0.4
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.2
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding RIF1 0.678
Publications: 1 Organism: Mus Musculus
Pathways:DNA repair in cancer
+ up-regulates activity img/direct-activation.png relocalization TP53BP1 0.27
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png ubiquitination TP53BP1 0.822
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png binding H4C1 0.2
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.416
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png relocalization TP53BP1 0.626
Publications: 1
+ up-regulates img/direct-activation.png phosphorylation TP53BP1 0.401
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png sumoylation TP53BP1 0.498
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png sumoylation TP53BP1 0.63
Publications: 1 Organism: Homo Sapiens