Evidence map›Paper›PMID 18940926›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2008

Activities of human exonuclease 1 that promote cleavage of transcribed immunoglobulin switch regions.

Aarthy C Vallur, Nancy Maizels

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

21 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
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  6. Specific Human ATR and ATM Inhibitors Modulate Single Strand DNA Formation inFrontiers in cellular and infection microbiology · 2021
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  11. Interplay of catalysis, fidelity, threading, and processivity in the exo- and endonucleolytic reactions of human exonuclease I.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  12. Review
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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.

Aarthy C VallurDepartments of Immunology and Biochemistry, University of Washington Medical School, Seattle, WA 98195-7650, USA.
Nancy Maizels
University of Washington Medical Center · US

Funding

Tumor mutation signaturesP01CA077852 · NCI · UNIVERSITY OF WASHINGTON · PI MONNAT, RAYMOND J · 1999 to 2019
$26.0M
MOLECULAR MECHANISMS OF ISOTYPE SWITCH RECOMBINATIONR01GM039799 · NIGMS · YALE UNIVERSITY · PI MAIZELS, NANCY · 1988 to 2009
$2.8M
DYNAMICS AND FUNCTION OF G4 DNAR01GM065988 · NIGMS · UNIVERSITY OF WASHINGTON · PI MAIZELS, NANCY · 2002 to 2007
$1.4M
NCI NIH HHS P01 CA077852NIGMS NIH HHS R01 GM039799NIGMS NIH HHS R01 GM065988NIGMS NIH HHS R01 GM39799NIGMS NIH HHS R01 GM65988
6 · The paper itself

Abstract

Eukaryotic exonuclease 1 functions in replication, recombination, mismatch repair, telomere maintenance, immunoglobulin (Ig) gene class switch recombination, and somatic hypermutation. The enzyme has 5'-3' exonuclease, flap endonuclease, and weak RNaseH activity in vitro, but it has been difficult to reconcile these activities with its diverse biological functions. We report robust cleavage by human exonuclease 1 of transcribed G-rich DNA sequences with potential to form G loops and G4 DNA. Predicted Ig switch recombination intermediates are substrates for both exonucleolytic and 5' flap endonucleolytic cleavage. Excision is nick-dependent and structure-dependent. These results lead to a model for exonuclease 1 function in class switch recombination in which cleavage at activation-induced deaminase (AID)-initiated nicks produces gaps that become substrates for further attack by AID and subsequent repair.

Indexed as

AICDA (Activation-Induced Cytidine Deaminase)AnimalsCytidine DeaminaseDNA Repair EnzymesExodeoxyribonucleasesHumansHydrolysisImmunoglobulin Class SwitchingImmunoglobulin Switch RegionMiceMice, KnockoutTranscription, GeneticAICDA (Activation-Induced Cytidine Deaminase)Cytidine DeaminaseDNA Repair EnzymesEXO1 protein, humanexodeoxyribonuclease IExodeoxyribonucleases

Identifiers

PMID18940926
PMCPMC2575450
OpenAlexW2144547426

What OpenQuestion holds

Textmetadata
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.