Cited by 676DNA Repair MechanismsBRCA gene mutations in cancerPARP inhibition in cancer therapy

BACH1, a Novel Helicase-like Protein, Interacts Directly with BRCA1 and Contributes to Its DNA Repair Function

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Cantor, Sharon B., Bell, Daphne W., Ganesan, Shridar, Kass, Elizabeth M., Drapkin, Ronny, Grossman, Steven, Wahrer, Doke C.R., Sgroi, Dennis C. +3 more·2001·Cell

Abstract

BRCA1 interacts in vivo with a novel protein, BACH1, a member of the DEAH helicase family. BACH1 binds directly to the BRCT repeats of BRCA1. A BACH1 derivative, bearing a mutation in a residue that was essential for catalytic function in other helicases, interfered with normal double-strand break repair in a manner that was dependent on its BRCA1 binding function. Thus, BACH1/BRCA1 complex formation contributes to a key BRCA1 activity. In addition, germline BACH1 mutations affecting the helicase domain were detected in two early-onset breast cancer patients and not in 200 matched controls. Thus, it is conceivable that, like BRCA1, BACH1 is a target of germline cancer-inducing mutations.

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  • The FANCJ gene contains 20 exons spanning more than 180 kb of genomic sequence at chromosome 17q22.

    “The purified 130-kDa protein was subject to tandem mass spectrometry and the FANCJ gene was cloned and found to consist of 20 exons spanning greater than 180 kb of genomic sequence in chromosome 17q22.”
  • Tumors from individuals heterozygous for the P47A or M299I germline FANCJ mutations did not show loss of the corresponding wild-type allele.

    “Furthermore, unlike the classic paradigm for tumor suppressor genes, in which the tumor exclusively lacks the wild-type allele, tumors of individuals who were heterozygous for these two germline FANCJ mutations did not show loss of the corresponding wild-type allele [8].”
  • The P47A variant, shown to disrupt FANCJ enzyme function, was found in controls of a later study and considered unrelated to breast cancer.

    “For example, the P47A variant identified in 2001 [8] and shown to disrupt FANCJ enzyme function [56] was found in the controls of a subsequent study and considered to be unrelated to breast cancer [44].”
  • A 130-kDa protein identified by a GST-BRCT far western screen failed to interact with BRCA1 BRCT patient mutants P1749R and M1775R.

    “Among the proteins identified was a protein of approximately 130 kDa that failed to interact with a BRCA1, harboring patient mutations within the BRCT motifs (P1749R and M1775R) [8].”
  • The FANCJ protein product has strong homology to the catalytic and nucleotide-binding domains of DEAH helicases, including XPD.

    “Most notably, the protein product had strong homology to the catalytic and nucleotide-binding domains of other members within the DEAH helicase family, including the xeroderma pigmentosum complimenting group D (XPD) [8].”

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  1. of TFIIH. Proc. Natl. Acad. Sci. USA 93, 10578-10583.

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Authors
Cantor, S. B., Bell, D. W., Ganesan, S., Kass, E. M., Drapkin, R., Grossman, S., Wahrer, D. C. R., Sgroi, D. C., Lane, W. S., Haber, D. A., & Livingston, D. M.
Affiliations
  • Harvard University (US)
  • Massachusetts General Hospital (US)
Corresponding author
Livingston, David M.
Venue
Cell
Publisher
Elsevier BV
Published
2001-04
Volume
105
Issue
1
Pages
149-160
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2109173575
Cited by
674
References
61
Citations by year
2026: 17 · 2025: 16 · 2024: 20 · 2023: 25 · 2022: 17 · 2021: 32 · 2020: 23 · 2019: 27 · 2018: 14 · 2017: 20 · 2016: 33 · 2015: 29 · 2014: 24 · 2013: 21 · 2012: 35
FWCI
9.31
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@UMassChan (submittedVersion)
Funders
  • National Heart, Lung, and Blood Institute (T32HL007627, T32-HL07627-16)
  • National Cancer Institute (P50 CA 89393, P50CA089393)
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
BACH1, BRCA1, protein-protein interaction, DNA double-strand break repair, homologous recombination, germline mutations, early-onset breast cancer, cancer susceptibility genes
MeSH terms
Adult, Binding Sites, Boston, Breast Neoplasms, Cell Line, Chromosomes, Human, Pair 17, DNA Repair, DNA Helicases, DNA-Binding Proteins, Female, Genetic Testing, Humans, Molecular Sequence Data, Protein Binding, Recombinant Fusion Proteins, Transfection, Mutagenesis, Site-Directed, Sequence Homology, Amino Acid, Protein Structure, Tertiary, BRCA1 Protein, Genetic Predisposition to Disease, RNA Helicases, Amino Acid Motifs, Spectrometry, Mass, Electrospray Ionization, Fanconi Anemia Complementation Group Proteins

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