Evidence map›Paper›PMID 23197831›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Insulator-like pairing elements regulate silencing and mutually exclusive expression in the malaria parasite Plasmodium falciparum.

Inbar Avraham, Jeremy Schreier, Ron Dzikowski

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

21 citing papers in PubMed, 35 citations in OpenAlex.

  1. Trial
  2. Article
  3. A nuclear redox sensor modulates gene activation andProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  4. Review
  5. Review
  6. Article
  7. Frontiers in microbiology · 2018
    Article
  8. Article
  9. Malaria Epigenetics.Cold Spring Harbor perspectives in medicine · 2017
    Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Antisense long noncoding RNAs regulate var gene activation in the malaria parasite Plasmodium falciparum.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  18. Article
  19. Article
  20. Article
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

3 authors at 1 institution in 1 country.

Inbar AvrahamDepartment of Microbiology and Molecular Genetics, Institute for Medical Research Israel-Canada, Jerusalem 91120, Israel.
Jeremy Schreier
Ron Dzikowski
Hadassah Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Plasmodium falciparum causes the deadliest form of human malaria. Its virulence is attributed to its ability to modify the infected RBC and to evade human immune attack through antigenic variation. Antigenic variation is achieved through tight regulation of antigenic switches between variable surface antigens named "P. falciparum erythrocyte membrane protein-1" encoded by the var multicopy gene family. Individual parasites express only a single var gene at a time, maintaining the remaining var genes in a transcriptionally silent state. Strict pairing between var gene promoters and a second promoter within an intron found in each var gene is required for silencing and counting of var genes by the mechanism that controls mutually exclusive expression. We have identified and characterized insulator-like DNA elements that are required for pairing var promoters and introns and thus are essential for regulating silencing and mutually exclusive expression. These elements, found in the regulatory regions of each var gene, are bound by distinct nuclear protein complexes. Any alteration in the specific, paired structure of these elements by either deletion or insertion of additional elements results in an unregulated var gene. We propose a model by which silencing and mutually exclusive expression of var genes is regulated by the precise arrangement of insulator-like DNA pairing elements.

Indexed as

Gene Expression RegulationGene Silencing3' Untranslated Regions5' Untranslated RegionsAnimalsBase SequenceComputational BiologyConserved SequenceDNA, ProtozoanGenes, ProtozoanHumansInsulator ElementsIntronsMalaria, FalciparumMolecular Sequence DataMultienzyme Complexes3' Untranslated Regions5' Untranslated RegionsDNA, ProtozoanMultienzyme ComplexesProtozoan ProteinsTetrahydrofolate DehydrogenaseThymidylate Synthasethymidylate synthase-dihydrofolate reductase

Identifiers

PMID23197831
PMCPMC3535642
OpenAlexW2133690940

What OpenQuestion holds

Textmetadata
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.