Evidence map›Paper›PMID 21813340›Full record

ArticleDNA repair2011

Guanine repeat-containing sequences confer transcription-dependent instability in an orientation-specific manner in yeast.

Nayun Kim, Sue Jinks-Robertson

Abstract read
In one paragraph

Article in DNA repair, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

35 citing papers in PubMed, 51 citations in OpenAlex.

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  13. Modulation of DNA structure formation using small molecules.Biochimica et biophysica acta. Molecular cell research · 2019
    Review
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  19. Cytosine deamination and base excision repair cause R-loop-induced CAG repeat fragility and instability inProceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  20. Review
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

2 authors at 1 institution in 1 country.

Nayun KimDepartment of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA. nayun.kim@duke.edu
Sue Jinks-Robertson
Duke Medical Center · US

Funding

REGULATION OF MITOTIC RECOMBINATION IN YEASTR01GM038464 · NIGMS · EMORY UNIVERSITY · PI JINKS-ROBERTSON, SUE · 1992 to 2015
$3.6M
RECOMBINATION BETWEEN REPEATED SEQUENCE IN YEASTR29GM038464 · NIGMS · EMORY UNIVERSITY · PI JINKS-ROBERTSON, SUE · 1987 to 1991
–
NIGMS NIH HHS GM38464NIGMS NIH HHS R01 GM038464
6 · The paper itself

Abstract

Non-B DNA structures are a major contributor to the genomic instability associated with repetitive sequences. Immunoglobulin switch Mu (Sμ) region sequence is comprised of guanine-rich repeats and has high potential for forming G4 DNA, in which one strand of DNA folds into an array of guanine quartets. Taking advantage of the genetic tractability of Saccharomyces cerevisiae, we developed a recombination assay to investigate mechanisms involved in maintaining stability of G-rich repetitive sequence. By embedding Sμ sequence within recombination substrates under the control of a tetracycline-regulatable promoter, we demonstrate that the rate and orientation of transcription both affect the stability of Sμ sequence. In particular, the greatest instability was observed under high-transcription conditions when the Sμ sequence was oriented with the C-rich strand as the transcription template. The effect of transcription orientation was enhanced in the absence of the Type IB topoisomerase Top1, possibly due to enhanced R-loop formation. Loss of Sgs1 helicase and RNase H activity also increased instability, suggesting they may cooperatively function to reduce the formation of non-B DNA structures in highly transcribed regions. Finally, the Sμ sequence was unstable when transcription elongation was perturbed due to a defective THO complex. In a THO-deficient background, there was further exacerbation of orientation-dependent instability associated with the ectopically expressed, single-strand cytosine deaminase AID. The implications of our findings to understanding instability associated with potential G4 DNA forming sequences are discussed.

Indexed as

Genomic InstabilityGuanineTranscription, GeneticAICDA (Activation-Induced Cytidine Deaminase)AnimalsBase SequenceCytidine DeaminaseDNADNA-Binding ProteinsDNA HelicasesDNA Topoisomerases, Type IGene Expression Regulation, FungalHomologous RecombinationImmunoglobulin Switch RegionMiceMolecular Sequence DataAICDA (Activation-Induced Cytidine Deaminase)Cytidine DeaminaseDNADNA-Binding ProteinsDNA HelicasesDNA Topoisomerases, Type IGuanineRibonuclease H

Identifiers

PMID21813340
PMCPMC3162091
OpenAlexW2155383088

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.