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Title: Human HLTF mediates postreplication repair by its HIRAN domain-dependent replication fork remodelling

Journal Article · · Nucleic Acids Research
DOI:https://doi.org/10.1093/nar/gkv896· OSTI ID:1223716
 [1];  [1];  [2];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Hungarian Academy of Sciences, Szeged (Hungary)
  2. Zhejiang Univ., Hangzhou (China)
  3. Dana Farber Cancer Institute, Boston, MA (United States)
  4. Vilnius Univ., Vilnius (Lithuania)

Defects in the ability to respond properly to an unrepaired DNA lesion blocking replication promote genomic instability and cancer. Human HLTF, implicated in error-free replication of damaged DNA and tumour suppression, exhibits a HIRAN domain, a RING domain, and a SWI/SNF domain facilitating DNA-binding, PCNA-polyubiquitin-ligase, and dsDNA-translocase activities, respectively. Here, we investigate the mechanism of HLTF action with emphasis on its HIRAN domain. We found that in cells HLTF promotes the filling-in of gaps left opposite damaged DNA during replication, and this postreplication repair function depends on its HIRAN domain. Our biochemical assays show that HIRAN domain mutant HLTF proteins retain their ubiquitin ligase, ATPase and dsDNA translocase activities but are impaired in binding to a model replication fork. These data and our structural study indicate that the HIRAN domain recruits HLTF to a stalled replication fork, and it also provides the direction for the movement of the dsDNA translocase motor domain for fork reversal. We suggest functional similarities between the HIRAN, the OB, the HARP2, and other domains found in certain motor proteins, which may explain why only a subset of DNA translocases can carry out fork reversal.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1223716
Journal Information:
Nucleic Acids Research, Journal Name: Nucleic Acids Research; ISSN 0305-1048
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

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Cited By (14)

The HIRAN domain of helicase-like transcription factor positions the DNA translocase motor to drive efficient DNA fork regression journal April 2018
Mechanisms of DNA Damage Tolerance: Post-Translational Regulation of PCNA journal December 2018
Ubiquitylation at the Fork: Making and Breaking Chains to Complete DNA Replication journal September 2018
Opposing Roles of FANCJ and HLTF Protect Forks and Restrain Replication during Stress journal September 2018
WRNIP1 Protects Reversed DNA Replication Forks from SLX4-Dependent Nucleolytic Cleavage journal November 2019
Structural basis for the multi-activity factor Rad5 in replication stress tolerance journal January 2021
Genome Features and Biochemical Characteristics of a Robust, Fast Growing and Naturally Transformable Cyanobacterium Synechococcus elongatus PCC 11801 Isolated from India journal November 2018
HIV-1 Vpr counteracts HLTF-mediated restriction of HIV-1 infection in T cells journal April 2019
Mechanisms of bacterial DNA replication restart journal November 2017
Regulation of HLTF-mediated PCNA polyubiquitination by RFC and PCNA monoubiquitination levels determines choice of damage tolerance pathway journal October 2018
Mechanisms of Post-Replication DNA Repair text January 2017
Structural basis for the molecular interactions in DNA damage tolerances journal January 2017
The Tyrosyl-DNA Phosphodiesterase 1β (Tdp1β) Gene Discloses an Early Response to Abiotic Stresses journal November 2017
Homologous recombination defects and how they affect replication fork maintenance journal December 2018

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