Evidence map›Paper›PMID 23980881›Full record

ArticleMolecular microbiology2013

Genome-wide profiling of chromosome interactions in Plasmodium falciparum characterizes nuclear architecture and reconfigurations associated with antigenic variation.

Jacob E Lemieux, Sue A Kyes, Thomas D Otto, Avi I Feller, Richard T Eastman, Robert A Pinches, Matthew Berriman, Xin-Zhuan Su, Chris I Newbold

Open access · hybridAbstract read
In one paragraph

Article in Molecular microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 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

9 authors at 4 institutions in 2 countries.

Jacob E LemieuxWeatherall Institute of Molecular Medicine, Headington, Oxford, OX3 9DS, UK; National Institute of Allergy and Infectious Disease, NIH, Rockville, MD, 20892, USA.
Sue A Kyes
Thomas D Otto
Avi I Feller
Richard T Eastman
Robert A Pinches
Matthew Berriman
Xin-Zhuan Su
Chris I Newbold
MRC Weatherall Institute of Molecular Medicine · GBNational Institutes of Health · USWellcome Sanger Institute · GBHarvard University Press · US

Funding

Malaria Parasite Sexual Development, Drug Resistance, and EvolutionZIAAI000892 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI SU, XINZHUAN · 2009 to 2025
$23.3M
Wellcome Trust 082130Wellcome Trust 082130/Z/07/ZWellcome Trust 098051
6 · The paper itself

Abstract

Spatial relationships within the eukaryotic nucleus are essential for proper nuclear function. In Plasmodium falciparum, the repositioning of chromosomes has been implicated in the regulation of the expression of genes responsible for antigenic variation, and the formation of a single, peri-nuclear nucleolus results in the clustering of rDNA. Nevertheless, the precise spatial relationships between chromosomes remain poorly understood, because, until recently, techniques with sufficient resolution have been lacking. Here we have used chromosome conformation capture and second-generation sequencing to study changes in chromosome folding and spatial positioning that occur during switches in var gene expression. We have generated maps of chromosomal spatial affinities within the P. falciparum nucleus at 25 Kb resolution, revealing a structured nucleolus, an absence of chromosome territories, and confirming previously identified clustering of heterochromatin foci. We show that switches in var gene expression do not appear to involve interaction with a distant enhancer, but do result in local changes at the active locus. These maps reveal the folding properties of malaria chromosomes, validate known physical associations, and characterize the global landscape of spatial interactions. Collectively, our data provide critical information for a better understanding of gene expression regulation and antigenic variation in malaria parasites.

Indexed as

Antigenic VariationChromosomesCell NucleolusChromosome MappingDNA, ProtozoanDNA, RibosomalEnhancer Elements, GeneticGene Expression RegulationGenetic LociGenome, ProtozoanModels, GeneticNucleic Acid ConformationPlasmodium falciparumProtozoan ProteinsSequence Analysis, DNADNA, ProtozoanDNA, Ribosomalerythrocyte membrane protein 1, Plasmodium falciparumProtozoan Proteins

Identifiers

PMID23980881
PMCPMC3894959
OpenAlexW1961772435

What OpenQuestion 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 OpenQuestion graph.