Cited by 308DNA Repair MechanismsBRCA gene mutations in cancerPARP inhibition in cancer therapy

Multifactorial contributions to an acute DNA damage response by BRCA1/BARD1-containing complexes

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Greenberg, Roger A., Sobhian, Bijan, Pathania, Shailja, Cantor, Sharon B., Nakatani, Yoshihiro, Livingston, David M.·2006·Genes & Development

Abstract

The BRCA1 gene product and its stoichiometric binding partner, BARD1, play a vital role in the cellular response to DNA damage. However, how they acquire specific biochemical functions after DNA damage is poorly understood. Following exposure to genotoxic stress, DNA damage-specific interactions were observed between BRCA1/BARD1 and the DNA damage-response proteins, TopBP1 and Mre11/Rad50/NBS1. Two distinct DNA damage-dependent super complexes emerged; their activation was dependent, in part, on the actions of specific checkpoint kinases, and each super complex contributed to a distinctive aspect of the DNA damage response. The results support a new, multifactorial model that describes how genotoxic stress enables BRCA1 to execute a diverse set of DNA damage-response functions.

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  • Abraxas, Bach1, and CtIP directly interact with BRCA1 BRCT domains through the pSPxF motif in a phosphorylation-dependent manner, forming mutually exclusive A, B, and C complexes.

    “Three proteins, Abraxas (also known as Abra1, FAM175A, CCDC98), Bach1 (also known as Brip1, FancJ) and CtIP (also known as RBBP8), directly interact with the BRCA1 BRCT domains through the pSPxF motif in a phosphorylation-dependent manner forming mutually exclusive complexes, which were thus named as the A, B and C complexes of BRCA1 (Greenberg et al., 2006; Kim et al., 2007; Liu et al., 2007;”
  • FANCJ helicase activity induced in S phase is required for FANCJ to promote S phase progression and possibly intra-S phase checkpoints.

    “FANCJ helicase activity induced in S phase is also required for FANCJ to promote S phase progression and possibly intra-S phase checkpoints [71,72].”

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Authors
Greenberg, R. A., Sobhian, B., Pathania, S., Cantor, S. B., Nakatani, Y., & Livingston, D. M.
Affiliations
Harvard University (US)
Venue
Genes & Development
Published
2006-01-01
Volume
20
Issue
1
Pages
34-46
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2164458581
Cited by
308
References
61
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 9 · 2022: 12 · 2021: 17 · 2020: 13 · 2019: 4 · 2018: 14 · 2017: 12 · 2016: 10 · 2015: 19 · 2014: 21 · 2013: 19 · 2012: 22
Type
posted content
Language
en
Open access
Locations
  • Genes & Development (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@UMassChan (submittedVersion)
Funders
  • Leukemia Research Foundation
  • Broad Institute
  • Österreichischen Akademie der Wissenschaften
  • National Cancer Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
Keywords
BRCA1, BARD1, DNA damage response, TopBP1, Mre11-Rad50-Nbs1, checkpoint kinase, genotoxic stress
MeSH terms
MRE11 Homologue Protein, Carrier Proteins, Cell Cycle, DNA Damage, DNA Repair, DNA-Binding Proteins, Humans, Nuclear Proteins, Protein Binding, Acid Anhydride Hydrolases, Cell Cycle Proteins, BRCA1 Protein, Tumor Suppressor Proteins, Ubiquitin-Protein Ligases, DNA Repair Enzymes, Cell Line, Tumor

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