Summary

Name BRCA2
Full Name Breast cancer type 2 susceptibility protein
Synonyms Fanconi anemia group D1 protein | FACD, FANCD1
Primary ID P51587
Links - -
Type protein
Relations 19
Pathways DNA repair in cancer
Function Involved in double-strand break repair and/or homologous recombination. Binds RAD51 and potentiates recombinational DNA repair by promoting assembly of RAD51 onto single-stranded DNA (ssDNA). Acts by targeting RAD51 to ssDNA over double-stranded DNA, enabling RAD51 to displace replication protein-A (RPA) from ssDNA and stabilizing RAD51-ssDNA filaments by blocking ATP hydrolysis. Part of a PALB2-scaffolded HR complex containing RAD51C and which is thought to play a role in DNA repair by HR. May participate in S phase checkpoint activation. Binds selectively to ssDNA, and to ssDNA in tailed duplexes and replication fork structures. May play a role in the extension step after strand invasion at replication-dependent DNA double-strand breaks; together with PALB2 is involved in both POLH localization at collapsed replication forks and DNA polymerization activity. In concert with NPM1, regulates centrosome duplication. Interacts with the TREX-2 complex (transcription and export complex 2) subunits PCID2 and SEM1, and is required to prevent R-loop-associated DNA damage and thus transcription-associated genomic instability. Silencing of BRCA2 promotes R-loop accumulation at actively transcribed genes in replicating and non-replicating cells, suggesting that BRCA2 mediates the control of R-loop associated genomic instability, independently of its known role in homologous recombination (PubMed:24896180).

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Modifications Tables

Relations

Regulator Mechanism target score
+ img/unknown.png phosphorylation BRCA2 0.556
Publications: 5 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation BRCA2 0.556
Publications: 5 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding RAD51 0.945
Publications: 1 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ up-regulates activity img/direct-activation.png binding, relocalization BRCA2 0.806
Publications: 2 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding BRCA2 0.94
Publications: 1 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ form complex img/form-complex.png binding BRCC ubiquitin ligase complex 0.762
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png BRCA2 0.784
Publications: 1
+ down-regulates activity img/direct_inhibition.png binding BRCA2 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding POLH 0.533
Publications: 1 Organism: Homo Sapiens
Pathways:DNA repair in cancer
+ form complex img/form-complex.png binding D1-D2-G-X3 complex 0.793
Publications: 1 Organism: Homo Sapiens