Cited by 78DNA Repair MechanismsBRCA gene mutations in cancerPARP inhibition in cancer therapy

BRCA1 tumor suppressor network: focusing on its tail

Open access
Wang, Bin·2012·Cell & Bioscience

Abstract

Germline mutations of the BRCA1 tumor suppressor gene are a major cause of familial breast and ovarian cancer. BRCA1 plays critical roles in the DNA damage response that regulates activities of multiple repair and checkpoint pathways for maintaining genome stability. The BRCT domains of BRCA1 constitute a phospho-peptide binding domain recognizing a phospho-SPxF motif (S, serine; P, proline; × varies; F, phenylalanine). The BRCT domains are frequently targeted by clinically important mutations and most of these mutations disrupt the binding surface of the BRCT domains to phosphorylated peptides. The BRCT domain and its capability to bind phosphorylated protein is required for the tumor suppressor function of BRCA1. Through its BRCT phospho-binding ability BRCA1 forms at least three mutually exclusive complexes by binding to phosphorylated proteins Abraxas, Bach1 and CTIP. The A, B and C complexes, at lease partially undertake BRCA1's role in mechanisms of cell cycle checkpoint and DNA repair that maintain genome stability, thus may play important roles in BRCA1's tumor suppressor function.

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  • Abraxas is a central adaptor protein in the BRCA1 A complex and contains domains needed for interactions with BRCA1 and other complex components.

    “In the BRCA1 A complex, Abraxas appears to be a central adaptor protein, as it harbors several domains necessary for the interactions with BRCA1 and other components in the complex (Wang, 2012).”

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Authors
Wang, B.
Affiliations
The University of Texas MD Anderson Cancer Center (US)
Corresponding author
Wang, Bin
Venue
Cell & Bioscience
Published
2012
Volume
2
Issue
1
Pages
6
ISSN
2045-3701 (ISSN-L)
OpenAlex
W2035903949
Cited by
78
References
123
Citations by year
2026: 5 · 2025: 2 · 2024: 10 · 2023: 6 · 2022: 4 · 2021: 7 · 2020: 6 · 2019: 5 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 4 · 2014: 4 · 2013: 8 · 2012: 6
FWCI
2.83
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Cell & Bioscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • University of Texas MD Anderson Cancer Center
  • National Cancer Institute (R01CA155025, CA155025)
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, BRCT domain, germline mutations, breast cancer, ovarian cancer, DNA damage response, genome stability, phosphopeptide binding, Abraxas, BACH1, CtIP, cell cycle checkpoints, DNA repair, tumor suppressor function

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