Evidence map›Paper›PMID 20730584›Full record

ArticleJournal of molecular evolution2010

Variable numbers of tandem repeats in Plasmodium falciparum genes.

John C Tan, Asako Tan, Lisa Checkley, Caroline M Honsa, Michael T Ferdig

Abstract read
In one paragraph

Article in Journal of molecular evolution, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

18 citing papers in PubMed, 27 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 1 institution in 1 country.

John C TanThe Eck Institute for Global Health, University of Notre Dame, 100 Galvin Life Sciences, Notre Dame, IN, 46556, USA. jtan1@nd.edu
Asako Tan
Lisa Checkley
Caroline M Honsa
Michael T Ferdig
University of Notre Dame · US

Funding

Mapping Drug Resistance Genes in Plasmodium falciparumR37AI048071 · NIAID · TEXAS BIOMEDICAL RESEARCH INSTITUTE · PI ANDERSON, TIM J · 2012 to 2021
$7.9M
Copy Number Variation in Malaria ParasitesR01AI075145 · NIAID · TEXAS BIOMEDICAL RESEARCH INSTITUTE · PI ANDERSON, TIM J · 2007 to 2011
$2.0M
Determinants of growth and fitness in drug resistant malaria parasitesR01AI071121 · NIAID · UNIVERSITY OF NOTRE DAME · PI FERDIG, MICHAEL T · 2008 to 2012
$1.8M
NIAID NIH HHS AI071121NIAID NIH HHS AI075145NIAID NIH HHS R01 AI071121NIAID NIH HHS R01 AI075145NIAID NIH HHS R37 AI048071
6 · The paper itself

Abstract

Genome variation studies in Plasmodium falciparum have focused on SNPs and, more recently, large-scale copy number polymorphisms and ectopic rearrangements. Here, we examine another source of variation: variable number tandem repeats (VNTRs). Interspersed low complexity features, including the well-studied P. falciparum microsatellite sequences, are commonly classified as VNTRs; however, this study is focused on longer coding VNTR polymorphisms, a small class of copy number variations. Selection against frameshift mutation is a main constraint on tandem repeats (TRs) in coding regions, while limited propagation of TRs longer than 975 nt total length is a minor restriction in coding regions. Comparative analysis of three P. falciparum genomes reveals that more than 9% of all P. falciparum ORFs harbor VNTRs, much more than has been reported for any other species. Moreover, genotyping of VNTR loci in a drug-selected line, progeny of a genetic cross, and 334 field isolates demonstrates broad variability in these sequences. Functional enrichment analysis of ORFs harboring VNTRs identifies stress and DNA damage responses along with chromatin modification activities, suggesting an influence on genome mutability and functional variation. Analysis of the repeat units and their flanking regions in both P. falciparum and Plasmodium reichenowi sequences implicates a replication slippage mechanism in the generation of TRs from an initially unrepeated sequence. VNTRs can contribute to rapid adaptation by localized sequence duplication. They also can confound SNP-typing microarrays or mapping short-sequence reads and therefore must be accounted for in such analyses.

Indexed as

Frameshift MutationGene DosageGenes, ProtozoanGenetic LociMinisatellite RepeatsOpen Reading FramesPlasmodium falciparumRNA, MessengerTerminal Repeat SequencesRNA, Messenger

Identifiers

PMID20730584
PMCPMC3205454
OpenAlexW2086166103

What OpenQuestion holds

Textmetadata
LicenceTDM
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.