Cited by 845DNA Repair MechanismsUbiquitin and proteasome pathwaysDNA and Nucleic Acid Chemistry

Interaction of Human DNA Polymerase η with Monoubiquitinated PCNA

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Kannouche, Patricia L, Wing, Jonathan, Lehmann, Alan R·2004·Molecular Cell

Abstract

Most types of DNA damage block replication fork progression during DNA synthesis because replicative DNA polymerases are unable to accommodate altered DNA bases in their active sites. To overcome this block, eukaryotic cells employ specialized translesion synthesis (TLS) polymerases, which can insert nucleotides opposite damaged bases. In particular, TLS by DNA polymerase eta (poleta) is the major pathway for bypassing UV photoproducts. How the cell switches from replicative to TLS polymerase at the site of blocked forks is unknown. We show that, in human cells, PCNA becomes monoubiquitinated following UV irradiation of the cells and that this is dependent on the hRad18 protein. Monoubiquitinated PCNA but not unmodified PCNA specifically interacts with poleta, and we have identified two motifs in poleta that are involved in this interaction. Our findings provide an attractive mechanism by which monoubiquitination of PCNA might mediate the polymerase switch.

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Crossref · 10.1016/s1097-2765(04)00259-x

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  • During translesion synthesis, PCNA is monoubiquitinated at K164 by Rad18, stimulating recruitment of TLS polymerases.

    “During translesion synthesis, the PCNA sliding clamp is monoubiquitinated at lysine residue 164 (K164) by the E3 ubiquitin ligase, Rad18 (Watanabe et al., 2004). This modification stimulates recruitment of translesion synthesis polymerases, which bind the PCNA ubiquitin group via their ubiquitin-binding domains (Kannouche et al., 2004; Bienko et al., 2005).”

    From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Kannouche et al., 2004

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Authors
Kannouche, P. L., Wing, J., & Lehmann, A. R.
Affiliations
University of Sussex (GB)
Corresponding author
Lehmann, Alan R
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2004-05
Volume
14
Issue
4
Pages
491-500
ISSN
1097-2765 (ISSN-L)
OpenAlex
W1840855988
Cited by
845
References
29
Citations by year
2026: 9 · 2025: 16 · 2024: 28 · 2023: 21 · 2022: 21 · 2021: 29 · 2020: 28 · 2019: 17 · 2018: 34 · 2017: 32 · 2016: 34 · 2015: 33 · 2014: 39 · 2013: 38 · 2012: 62
FWCI
21.08
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
Mauritius Research Council (EU FP5 QoL, QLG-CT-1999-00181)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
Keywords
DNA polymerase eta, PCNA monoubiquitination, translesion synthesis, UV photoproducts, replication fork stalling, protein-protein interaction, DNA damage tolerance, UV-induced DNA damage
MeSH terms
Y-Family DNA Polymerases, Chromatin, DNA, DNA Damage, DNA-Directed DNA Polymerase, DNA Replication, DNA-Binding Proteins, Humans, Ultraviolet Rays, Protein Structure, Tertiary, Proliferating Cell Nuclear Antigen, Ubiquitin, Ubiquitin-Protein Ligases

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