FUNCTION: Endonuclease that cooperates with the MRE11-RAD50-NBN (MRN) complex in DNA-end resection, the first step of double-strand break (DSB) repair through the homologous recombination (HR) pathway (PubMed:17965729, PubMed:19202191, PubMed:19759395, PubMed:20064462, PubMed:26721387). HR is restri...
FUNCTION: Endonuclease that cooperates with the MRE11-RAD50-NBN (MRN) complex in DNA-end resection, the first step of double-strand break (DSB) repair through the homologous recombination (HR) pathway (PubMed:17965729, PubMed:19202191, PubMed:19759395, PubMed:20064462, PubMed:26721387). HR is restricted to S and G2 phases of the cell cycle and preferentially repairs DSBs resulting from replication fork collapse (PubMed:17965729, PubMed:19202191). Key determinant of DSB repair pathway choice, as it commits cells to HR by preventing classical non-homologous end-joining (NHEJ) (PubMed:19202191). Functions downstream of the MRN complex and ATM, promotes ATR activation and its recruitment to DSBs in the S/G2 phase facilitating the generation of ssDNA (PubMed:16581787, PubMed:17965729, PubMed:19759395, PubMed:20064462). Component of the BRCA1-RBBP8 complex that regulates CHEK1 activation and controls cell cycle G2/M checkpoints on DNA damage (PubMed:15485915, PubMed:16818604). During immunoglobulin heavy chain class-switch recombination, promotes microhomology-mediated alternative end joining (A-NHEJ) and plays an essential role in chromosomal translocations (By similarity). {ECO:0000250|UniProtKB:Q80YR6, ECO:0000269|PubMed:15485915, ECO:0000269|PubMed:16581787, ECO:0000269|PubMed:16818604, ECO:0000269|PubMed:17965729, ECO:0000269|PubMed:19202191, ECO:0000269|PubMed:19759395, ECO:0000269|PubMed:20064462, ECO:0000269|PubMed:26721387}.
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GO - Biological processes (BP):
blastocyst hatching [GO:0001835]; cell division [GO:0051301]; DNA double-strand break processing involved in repair via single-strand annealing [GO:0010792]; DNA repair [GO:0006281]; DNA strand resection involved in replication fork processing [GO:0110025]; double-strand break repair via homologous ...
blastocyst hatching [GO:0001835]; cell division [GO:0051301]; DNA double-strand break processing involved in repair via single-strand annealing [GO:0010792]; DNA repair [GO:0006281]; DNA strand resection involved in replication fork processing [GO:0110025]; double-strand break repair via homologous recombination [GO:0000724]; G1/S transition of mitotic cell cycle [GO:0000082]; homologous recombination [GO:0035825]; meiotic cell cycle [GO:0051321]; mitotic G2/M transition checkpoint [GO:0044818]; positive regulation of double-strand break repair via homologous recombination [GO:1905168]; regulation of transcription by RNA polymerase II [GO:0006357]
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GO - Molecular function (MF):
damaged DNA binding [GO:0003684]; double-strand/single-strand DNA junction binding [GO:0000406]; double-stranded DNA binding [GO:0003690]; flap-structured DNA binding [GO:0070336]; identical protein binding [GO:0042802]; RNA polymerase II-specific DNA-binding transcription factor binding [GO:0061629...
damaged DNA binding [GO:0003684]; double-strand/single-strand DNA junction binding [GO:0000406]; double-stranded DNA binding [GO:0003690]; flap-structured DNA binding [GO:0070336]; identical protein binding [GO:0042802]; RNA polymerase II-specific DNA-binding transcription factor binding [GO:0061629]; single-stranded DNA binding [GO:0003697]; single-stranded DNA endodeoxyribonuclease activity [GO:0000014]; transcription corepressor activity [GO:0003714]; Y-form DNA binding [GO:0000403]
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GO - Cellular component (CC):
BRCA1-C complex [GO:0070533]; intracellular membrane-bounded organelle [GO:0043231]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]; site of double-strand break [GO:0035861]; transcription repressor complex [GO:0017053]...
BRCA1-C complex [GO:0070533]; intracellular membrane-bounded organelle [GO:0043231]; nucleoplasm [GO:0005654]; nucleus [GO:0005634]; site of double-strand break [GO:0035861]; transcription repressor complex [GO:0017053]
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