Cited by 74DNA Repair MechanismsDNA and Nucleic Acid ChemistryEffects of Radiation Exposure

The human checkpoint sensor Rad9–Rad1–Hus1 interacts with and stimulates NEIL1 glycosylase

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Guan, Xin, Bai, Haibo, Shi, Guoli, Theriot, Corey A., Hazra, Tapas K., Mitra, Sankar, Lu, A-Lien·2007·Nucleic Acids Research

Abstract

The checkpoint protein Rad9/Rad1/Hus1 heterotrimer (the 9-1-1 complex) is structurally similar to the proliferating cell nuclear antigen sliding clamp and has been proposed to sense DNA damage that leads to cell cycle arrest or apoptosis. Human (h) NEIL1 DNA glycosylase, an ortholog of bacterial Nei/Fpg, is involved in repairing oxidatively damaged DNA bases. In this study, we show that hNEIL1 interacts with hRad9, hRad1 and hHus1 as individual proteins and as a complex. Residues 290-350 of hNEIL1 are important for the 9-1-1 association. A significant fraction of the hNEIL1 nuclear foci co-localize with hRad9 foci in hydrogen peroxide treated cells. Human NEIL1 DNA glycosylase activity is significantly stimulated by hHus1, hRad1, hRad9 separately and the 9-1-1 complex. Thus, the 9-1-1 complex at the lesion sites serves as both a damage sensor to activate checkpoint control and a component of base excision repair.

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  • The 9-1-1 complex interacts with BER proteins APE1, Pol β, FEN1, DNA ligase I, and DNA glycosylases MutY, NEIL1, and TDG, stimulating their DNA repair activities.

    “As a critical component of ATR-Chk1 checkpoint pathway, the 9-1-1 complex interacts with several BER proteins: APE1, Polymerase β (Pol β), FEN1, DNA ligase I, as well as DNA glycosylases MutY, NEIL1, and TDG, thereby stimulating their DNA repair activities [177–185] (Fig. 3).”

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Authors
Guan, X., Bai, H., Shi, G., Theriot, C. A., Hazra, T. K., Mitra, S., & Lu, A.-L.
Affiliations
  • University of Maryland, Baltimore (US)
  • The University of Texas Medical Branch at Galveston (US)
Corresponding author
Lu, A-Lien
Venue
Nucleic Acids Research
Published
2007-03-29
Volume
35
Issue
8
Pages
2463-2472
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2030121415
Cited by
74
References
70
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 1 · 2019: 2 · 2016: 3 · 2015: 5 · 2014: 3 · 2013: 9 · 2012: 5
FWCI
3.44
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Nucleic Acids Research (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • University of North Carolina at Chapel Hill
  • University of California, Irvine
  • National Cancer Institute (CA102271, CA78391, R01CA078391, R01CA102271, R56CA078391, R01CA081063, CA81063)
  • National Institute of Environmental Health Sciences (P01 ES 06676, P30ES006676)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
DNA damage recognition, DNA base excision repair, hydrogen peroxide, protein-protein interaction, DNA damage checkpoint, cell cycle arrest
MeSH terms
Binding Sites, Cell Line, Enzyme Activation, Exonucleases, Humans, Cell Cycle Proteins, DNA Glycosylases

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