Evidence map›Paper›PMID 20485519›Full record

ArticlePLoS genetics2010

Defective resection at DNA double-strand breaks leads to de novo telomere formation and enhances gene targeting.

Woo-Hyun Chung, Zhu Zhu, Alma Papusha, Anna Malkova, Grzegorz Ira

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 132 papers.

0numbers the graph read from it
0cells of the map it votes in
132citing papers in PubMed
6.6field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

132 citing papers in PubMed, 174 citations in OpenAlex.

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  8. Assessment and Mitigation of CRISPR-Cas9-Induced Nontargeted Translocations.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  9. Article
  10. Interstitial telomeric sequences promote gross chromosomal rearrangement via multiple mechanisms.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. Article
  12. Review
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72 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Woo-Hyun ChungDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America.
Zhu Zhu
Alma Papusha
Anna Malkova
Grzegorz Ira
Baylor College of Medicine · USUniversity of Indianapolis · US

Funding

Regulation of DNA recombination in Saccharomyces cerevisiaeR01GM080600 · NIGMS · BAYLOR COLLEGE OF MEDICINE · PI IRA, GRZEGORZ A · 2007 to 2024
$5.5M
Amplification of risk resulting from mis-routing of double-strand break repairR01GM084242 · NIGMS · UNIVERSITY OF IOWA · PI MALKOVA, ANNA L · 2008 to 2017
$2.7M
NIGMS NIH HHS GM080600NIGMS NIH HHS GM084242-01NIGMS NIH HHS R01 GM080600NIGMS NIH HHS R01 GM084242
6 · The paper itself

Abstract

The formation of single-stranded DNA (ssDNA) at double-strand break (DSB) ends is essential in repair by homologous recombination and is mediated by DNA helicases and nucleases. Here we estimated the length of ssDNA generated during DSB repair and analyzed the consequences of elimination of processive resection pathways mediated by Sgs1 helicase and Exo1 nuclease on DSB repair fidelity. In wild-type cells during allelic gene conversion, an average of 2-4 kb of ssDNA accumulates at each side of the break. Longer ssDNA is formed during ectopic recombination or break-induced replication (BIR), reflecting much slower repair kinetics. This relatively extensive resection may help determine sequences involved in homology search and prevent recombination within short DNA repeats next to the break. In sgs1Delta exo1Delta mutants that form only very short ssDNA, allelic gene conversion decreases 5-fold and DSBs are repaired by BIR or de novo telomere formation resulting in loss of heterozygosity. The absence of the telomerase inhibitor, PIF1, increases de novo telomere pathway usage to about 50%. Accumulation of Cdc13, a protein recruiting telomerase, at the break site increases in sgs1Delta exo1Delta, and the requirement of the Ku complex for new telomere formation is partially bypassed. In contrast to this decreased and alternative DSB repair, the efficiency and accuracy of gene targeting increases dramatically in sgs1Delta exo1Delta cells, suggesting that transformed DNA is very stable in these mutants. Altogether these data establish a new role for processive resection in the fidelity of DSB repair.

Indexed as

DNA DamageGene TargetingTelomereAllelesDNA RepairDNA, Single-StrandedElectrophoresis, Gel, Pulsed-FieldRecombination, GeneticDNA, Single-Stranded

Identifiers

PMID20485519
PMCPMC2869328
OpenAlexW2003236929

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.