Evidence map›Paper›PMID 22188759›Full record

ArticleBiology direct2011

CRISPR loci reveal networks of gene exchange in archaea.

Avital Brodt, Mor N Lurie-Weinberger, Uri Gophna

Open access · goldAbstract read
In one paragraph

Article in Biology direct, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
7.7field-weighted citation impact, top 3% 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

40 citing papers in PubMed, 57 citations in OpenAlex.

  1. Article
  2. CRISPR-influenced symbiosis.Nature microbiology · 2023
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. CRISPR-Cas impedes archaeal mating.Nature microbiology · 2019
    Article
  10. Article
  11. Review
  12. Testing the retroelement invasion hypothesis for the emergence of the ancestral eukaryotic cell.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  13. Article
  14. Article
  15. Article
  16. Comparative Analysis of theFrontiers in microbiology · 2017
    Article
  17. A CRISPR View of Biological Mechanisms.Discoveries (Craiova, Romania) · 2016
    Review
  18. Article
  19. Review
  20. 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

3 authors at 1 institution in 1 country.

Avital BrodtDepartment of Molecular Microbiology and Biotechnology, George S, Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, 69978, Israel. urigo@tauex.tau.ac.il
Mor N Lurie-Weinberger
Uri Gophna
Tel Aviv University · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCRISPR (Clustered, Regularly, Interspaced, Short, Palindromic Repeats) loci provide prokaryotes with an adaptive immunity against viruses and other mobile genetic elements. CRISPR arrays can be transcribed and processed into small crRNA molecules, which are then used by the cell to target the foreign nucleic acid. Since spacers are accumulated by active CRISPR/Cas systems, the sequences of these spacers provide a record of the past "infection history" of the organism.

resultsHere we analyzed all currently known spacers present in archaeal genomes and identified their source by DNA similarity. While nearly 50% of archaeal spacers matched mobile genetic elements, such as plasmids or viruses, several others matched chromosomal genes of other organisms, primarily other archaea. Thus, networks of gene exchange between archaeal species were revealed by the spacer analysis, including many cases of inter-genus and inter-species gene transfer events. Spacers that recognize viral sequences tend to be located further away from the leader sequence, implying that there exists a selective pressure for their retention.

conclusionsCRISPR spacers provide direct evidence for extensive gene exchange in archaea, especially within genera, and support the current dogma where the primary role of the CRISPR/Cas system is anti-viral and anti-plasmid defense. OPEN PEER REVIEW: This article was reviewed by: Profs. W. Ford Doolittle, John van der Oost, Christa Schleper (nominated by board member Prof. J Peter Gogarten).

Indexed as

Genetic LociGene Transfer, HorizontalGenome, ArchaealArchaeaBase SequenceInverted Repeat Sequences

Identifiers

PMID22188759
PMCPMC3285040
OpenAlexW1998661584

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.