Evidence map›Paper›PMID 29338757›Full record

ArticleBMC research notes2018

A rapid high-resolution method for resolving DNA topoisomers.

Lesley A Mitchenall, Rachel E Hipkin, Michael M Piperakis, Nicolas P Burton, Anthony Maxwell

Abstract read
In one paragraph

Article in BMC research notes, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

6 citing papers in PubMed.

  1. Article
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  6. 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

5 authors.

Lesley A MitchenallDepartment of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.
Rachel E HipkinQiagen Ltd., Skelton House, Lloyd St. North, Manchester, M15 6SH, UK.
Michael M PiperakisDepartment of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.
Nicolas P BurtonInspiralis Ltd, Innovation Centre, Norwich Research Park, Colney Lane, Norwich, NR4 7UH, UK.
Anthony MaxwellDepartment of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK. tony.maxwell@jic.ac.uk.ORCID http://orcid.org/0000-0002-5756-6430

Funding

Biotechnology and Biological Sciences Research Council BB/J004561/1Biotechnology and Biological Sciences Research Council BBS/E/J/00000201
6 · The paper itself

Abstract

objectiveAgarose gel electrophoresis has been the mainstay technique for the analysis of DNA samples of moderate size. In addition to separating linear DNA molecules, it can also resolve different topological forms of plasmid DNAs, an application useful for the analysis of the reactions of DNA topoisomerases. However, gel electrophoresis is an intrinsically low-throughput technique and suffers from other potential disadvantages. We describe the application of the QIAxcel Advanced System, a high-throughput capillary electrophoresis system, to separate DNA topoisomers, and compare this technique with gel electrophoresis.

resultsWe prepared a range of topoisomers of plasmids pBR322 and pUC19, and a 339 bp DNA minicircle, and compared their separation by gel electrophoresis and the QIAxcel System. We found superior resolution with the QIAxcel System, and that quantitative analysis of topoisomer distributions was straightforward. We show that the QIAxcel system has advantages in terms of speed, resolution and cost, and can be applied to DNA circles of various sizes. It can readily be adapted for use in compound screening against topoisomerase targets.

Indexed as

DNADNA GyraseDNA, SuperhelicalDNA TopoisomerasesElectrophoresis, Agar GelElectrophoresis, CapillaryPlasmidsReproducibility of ResultsDNADNA GyraseDNA, SuperhelicalDNA TopoisomerasesCapillary electrophoresisDNA topoisomerasesMinicirclesPlasmids

Identifiers

PMID29338757
PMCPMC5771066

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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.