Evidence map›Paper›PMID 27573106›Full record

ArticleNature microbiology2016

Anti-cas spacers in orphan CRISPR4 arrays prevent uptake of active CRISPR-Cas I-F systems.

Cristóbal Almendros, Noemí M Guzmán, Jesús García-Martínez, Francisco J M Mojica

Abstract read
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In one paragraph

Article in Nature microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.0field-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

26 citing papers in PubMed, 40 citations in OpenAlex.

  1. Review
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  6. Comparative Genomics ofAntibiotics (Basel, Switzerland) · 2023
    Article
  7. Article
  8. A Comparative Analysis ofInternational journal of molecular sciences · 2022
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  9. Microbiology spectrum · 2022
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  10. Article
  11. Digging into the lesser-known aspects of CRISPR biology.International microbiology : the official journal of the Spanish Society for Microbiology · 2021
    Review
  12. Article
  13. CRISPR Arrays Away fromThe CRISPR journal · 2020
    Article
  14. Article
  15. Article
  16. Article
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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

4 authors at 1 institution in 1 country.

Cristóbal AlmendrosDepartamento de Fisiología, Genética y Microbiología, Universidad de Alicante, Alicante, Spain.
Noemí M GuzmánDepartamento de Fisiología, Genética y Microbiología, Universidad de Alicante, Alicante, Spain.
Jesús García-MartínezDepartamento de Fisiología, Genética y Microbiología, Universidad de Alicante, Alicante, Spain.ORCID 0000-0002-8149-8052
Francisco J M MojicaDepartamento de Fisiología, Genética y Microbiología, Universidad de Alicante, Alicante, Spain.ORCID 0000-0002-6660-4996
University of Alicante · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Archaea and bacteria harbour clustered regularly interspaced short palindromic repeats (CRISPR) loci. These arrays encode RNA molecules (crRNA), each containing a sequence of a single repeat-intervening spacer. The crRNAs guide CRISPR-associated (Cas) proteins to cleave nucleic acids complementary to the crRNA spacer, thus interfering with targeted foreign elements. Notably, pre-existing spacers may trigger the acquisition of new spacers from the target molecule by means of a primed adaptation mechanism. Here, we show that naturally occurring orphan CRISPR arrays that contain spacers matching sequences of the cognate (absent) cas genes are able to elicit both primed adaptation and direct interference against genetic elements carrying those genes. Our findings show the existence of an anti-cas mechanism that prevents the transfer of a fully equipped CRISPR-Cas system. Hence, they suggest that CRISPR immunity may be undesired by particular prokaryotes, potentially because they could limit possibilities for gaining favourable sequences by lateral transfer.

Indexed as

Recombination, GeneticArchaeaBacteriaCRISPR-Cas Systems

Identifiers

PMID27573106
OpenAlexW2489833439

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.