Evidence map›Paper›PMID 28981724›Full record

ArticleNucleic acids research2017

Dna2 initiates resection at clean DNA double-strand breaks.

Sharad C Paudyal, Shan Li, Hong Yan, Tony Hunter, Zhongsheng You

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

12 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
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  10. Review
  11. Sae2 antagonizes Rad9 accumulation at DNA double-strand breaks to attenuate checkpoint signaling and facilitate end resection.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  12. Article
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 3 institutions in 1 country.

Sharad C PaudyalDepartment of Cell Biology and Physiology, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, MO 63110, USA.
Shan LiDepartment of Cell Biology and Physiology, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, MO 63110, USA.
Hong YanFox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA.
Tony HunterSalk Institute, 10010 N Torrey Pines Road, La Jolla, CA 92037, USA.
Zhongsheng YouDepartment of Cell Biology and Physiology, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, MO 63110, USA.
Washington University in St. Louis · USFox Chase Cancer Center · USTorrey Pines Institute For Molecular Studies · US

Funding

MOLECULAR MECHANISMS OF DNA DAMAGE SIGNALING AND REPAIRR01GM098535 · NIGMS · WASHINGTON UNIVERSITY · PI PISTON, DAVID W · 2012 to 2025
$4.2M
NIGMS NIH HHS R01 GM098535
6 · The paper itself

Abstract

Nucleolytic resection of DNA double-strand breaks (DSBs) is essential for both checkpoint activation and homology-mediated repair; however, the precise mechanism of resection, especially the initiation step, remains incompletely understood. Resection of blocked ends with protein or chemical adducts is believed to be initiated by the MRN complex in conjunction with CtIP through internal cleavage of the 5' strand DNA. However, it is not clear whether resection of clean DSBs with free ends is also initiated by the same mechanism. Using the Xenopus nuclear extract system, here we show that the Dna2 nuclease directly initiates the resection of clean DSBs by cleaving the 5' strand DNA ∼10-20 nucleotides away from the ends. In the absence of Dna2, MRN together with CtIP mediate an alternative resection initiation pathway where the nuclease activity of MRN apparently directly cleaves the 5' strand DNA at more distal sites. MRN also facilitates resection initiation by promoting the recruitment of Dna2 and CtIP to the DNA substrate. The ssDNA-binding protein RPA promotes both Dna2- and CtIP-MRN-dependent resection initiation, but a RPA mutant can distinguish between these pathways. Our results strongly suggest that resection of blocked and clean DSBs is initiated via distinct mechanisms.

Indexed as

DNA Breaks, Double-StrandedDNA RepairAnimalsCarrier ProteinsDNADNA-Binding ProteinsDNA HelicasesDNA Repair EnzymesDNA, Single-StrandedEndonucleasesImmunoblottingMRE11 Homologue ProteinMutationProtein BindingTumor Suppressor ProteinsXenopus laevisCarrier ProteinsDNADNA2 protein, XenopusDNA-Binding ProteinsDNA HelicasesDNA Repair EnzymesDNA, Single-StrandedEndonucleasesMRE11 Homologue ProteinMre11 protein, XenopusNBN protein, XenopusRad50 protein, XenopusRBBP8 protein, XenopusRPA1 protein, XenopusTumor Suppressor ProteinsXenopus Proteins

Identifiers

PMID28981724
PMCPMC5714177
OpenAlexW2754791657

What OpenQuestion holds

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Registered trials

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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.