Evidence map›Paper›PMID 9611231›Full record

ArticleNucleic acids research1998

Characterization of Werner syndrome protein DNA helicase activity: directionality, substrate dependence and stimulation by replication protein A.

J C Shen, M D Gray, J Oshima, L A Loeb

Open access · bronzeAbstract read
In one paragraph

Article in Nucleic acids research, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed
6.4field-weighted citation impact, top 3% 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

87 citing papers in PubMed, 206 citations in OpenAlex.

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27 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

4 authors at 1 institution in 1 country.

J C ShenDepartment of Pathology, University of Washington, Box 357705, Seattle, WA 98195-7705, USA.
M D Gray
J Oshima
L A Loeb
University of Washington · US

Funding

INTERNATIONAL REGISTRY OF WERNER SYNDROME/CELL BANKR24CA078088 · NCI · UNIVERSITY OF WASHINGTON · PI MARTIN, GEORGE M. · 1997 to 2011
$2.1M
TARGETED MUTAGENESIS OF WERNER SYNDROME GENER01AG014446 · NIA · UNIVERSITY OF WASHINGTON · PI OSHIMA, JUNKO · 1997 to 2001
$473k
ACCUMULATION OF OXIDATIVE DNA DAMAGE DURING AGINGF32CA067482 · NCI · UNIVERSITY OF WASHINGTON · PI NEWCOMB, TERRY G · 1995 to 1996
–
NCI NIH HHS 1-F32-CA67482-01NCI NIH HHS R24-CA78088NIA NIH HHS R01-AG14446
6 · The paper itself

Abstract

Werner syndrome is an inherited disease characterized by premature aging, genetic instability and a high incidence of cancer. The wild type Werner syndrome protein (WRN) has been demonstrated to exhibit DNA helicase activity in vitro. Here we report further biochemical characterization of the WRN helicase. The enzyme unwinds double-stranded DNA, translocating 3'-->5' on the enzyme-bound strand. Hydrolysis of dATP or ATP, and to a lesser extent hydrolysis of dCTP or CTP, supports WRN-catalyzed strand-displacement. K m values for ATP and dATP are 51 and 119 microM, respectively, and 2.1 and 3.9 mM for CTP and dCTP, respectively. Strand-displacement activity of WRN is stimulated by single-stranded DNA-binding proteins (SSBs). Among the SSBs from Escherichia coli, bacteriophage T4 and human, stimulation by human SSB (human replication protein A, hRPA) is the most extensive and occurs with a stoichiometry which suggests direct interaction with WRN. A deficit in the interaction of WRN with hRPA may be associated with deletion mutations that occur at elevated frequency in Werner syndrome cells.

Indexed as

Adenine NucleotidesBacteriophage T4BaculoviridaeCytosine NucleotidesDNA-Binding ProteinsDNA HelicasesEscherichia coliExodeoxyribonucleasesGene ExpressionHumansKineticsRecombinant Fusion ProteinsRecQ HelicasesReplication Protein AViral ProteinsWerner SyndromeAdenine NucleotidesCytosine NucleotidesDNA-Binding ProteinsDNA HelicasesExodeoxyribonucleasesgp32 protein, Enterobacteria phage T4Recombinant Fusion ProteinsRecQ HelicasesReplication Protein ARPA1 protein, humanViral ProteinsWerner Syndrome HelicaseWRN protein, human

Identifiers

PMID9611231
PMCPMC147646
OpenAlexW1995702418

What OpenQuestion holds

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Read underepoch 390

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.