Summary

Name TP53BP1
Full Name TP53-binding protein 1
Synonyms 53BP1, p53-binding protein 1, p53BP1
Primary ID Q12888
Links - -
Type protein
Relations 30
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 img/direct-activation.png phosphorylation TP53BP1 0.869
Publications: 4 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ up-regulates activity img/direct-activation.png phosphorylation TP53BP1 0.421
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.615
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png dephosphorylation TP53BP1 0.365
Publications: 2 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.562
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.618
Publications: 1 Organism: In Vitro
+ img/unknown.png phosphorylation TP53BP1 0.869
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 0.2
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation TP53BP1 0.284
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 0.402
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png sumoylation TP53BP1 0.621
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 0.507
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png relocalization TP53BP1 0.272
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 relocalization TP53BP1 0.611
Publications: 1
+ up-regulates activity img/direct-activation.png binding RIF1 0.672
Publications: 1 Organism: Mus Musculus
Pathways:DNA repair in cancer
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation TP53BP1 0.408
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding TP53BP1 0.415
Publications: 1 Organism: Homo Sapiens