Evidence map›Paper›PMID 34545080›Full record

ArticleNature communications2021

Unwinding of a DNA replication fork by a hexameric viral helicase.

Abid Javed, Balazs Major, Jonathan A Stead, Cyril M Sanders, Elena V Orlova

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

14 citing papers in PubMed, 14 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Abid Javed *Department of Biological Sciences, Birkbeck College, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, UK.ORCID 0000-0002-5829-6057
Balazs Major *Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield, Medical School, Beech Hill Rd., Sheffield, S10 2RX, UK.
Jonathan A Stead *Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield, Medical School, Beech Hill Rd., Sheffield, S10 2RX, UK.ORCID 0000-0002-8133-3733
Cyril M SandersAcademic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield, Medical School, Beech Hill Rd., Sheffield, S10 2RX, UK. c.m.sanders@sheffield.ac.uk.ORCID 0000-0001-6006-4530
Elena V OrlovaDepartment of Biological Sciences, Birkbeck College, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, UK. e.orlova@mail.cryst.bbk.ac.uk.ORCID 0000-0003-3371-415X
University of Sheffield · GBInstitute of Structural and Molecular Biology · GB

Funding

Biotechnology and Biological Sciences Research Council BB/R001685/1Biotechnology and Biological Sciences Research Council BB/R002622/1Medical Research CouncilWellcome TrustWellcome Trust 202679/Z/16/ZWellcome Trust 206166/Z/17/Z
6 · The paper itself

Abstract

Hexameric helicases are motor proteins that unwind double-stranded DNA (dsDNA) during DNA replication but how they are optimised for strand separation is unclear. Here we present the cryo-EM structure of the full-length E1 helicase from papillomavirus, revealing all arms of a bound DNA replication fork and their interactions with the helicase. The replication fork junction is located at the entrance to the helicase collar ring, that sits above the AAA + motor assembly. dsDNA is escorted to and the 5´ single-stranded DNA (ssDNA) away from the unwinding point by the E1 dsDNA origin binding domains. The 3´ ssDNA interacts with six spirally-arranged β-hairpins and their cyclical top-to-bottom movement pulls the ssDNA through the helicase. Pulling of the RF against the collar ring separates the base-pairs, while modelling of the conformational cycle suggest an accompanying movement of the collar ring has an auxiliary role, helping to make efficient use of ATP in duplex unwinding.

Indexed as

DNA ReplicationProtein MultimerizationBase SequenceDNADNA-Binding ProteinsDNA HelicasesMutationNucleic Acid ConformationProtein BindingProtein DomainsViral ProteinsDNADNA-Binding ProteinsDNA HelicasesE1 protein, Bovine papillomavirusViral Proteins

Identifiers

PMID34545080
PMCPMC8452682
OpenAlexW3199510906

What Socratic 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 Socratic graph.