Evidence map›Paper›PMID 20374491›Full record

ArticleMolecular microbiology2010

A regulatory RNA required for antitermination of biofilm and capsular polysaccharide operons in Bacillales.

Irnov Irnov, Wade C Winkler

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
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

41 citing papers in PubMed, 68 citations in OpenAlex.

  1. Article
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  4. mBio · 2025
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  6. Defining Early Steps inbioRxiv : the preprint server for biology · 2023
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  15. Review
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  17. Processive Antitermination.Microbiology spectrum · 2018
    Review
  18. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Irnov IrnovDepartment of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, Texas 75390-9038, USA.
Wade C Winkler
The University of Texas Southwestern Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Formation of a Bacillus subtilis biofilm community requires an abundant matrix protein, TasA and an exopolysaccharide. The transcriptional regulatory pathways that control synthesis of these structural features are complex and responsive to multiple physiological and population signals. We report herein that an additional layer of co-transcriptional regulation is required for exopolysaccharide (eps) expression. This mechanism is mediated by a novel cis-acting RNA element, coined 'EAR', located between the second and third gene of the eps operon. The presence of the EAR element within the eps operon is required for readthrough of distally located termination signals. We also find that the EAR element promotes readthrough of heterologous termination sites. Based upon these observations, we hypothesize that the EAR element associates with RNA polymerase to promote processive antitermination, a process wherein the transcription elongation complex is altered by accessory factors to become resistant to pausing and termination signals. It is likely that this mechanism is required for eps expression to ensure full synthesis of the unusually long transcript (16 kb). We also identify the EAR element in other species within the order Bacillales, suggesting that a similar mechanism is required for synthesis of biofilm and capsular polysaccharide operons in other microorganisms.

Indexed as

BiofilmsOperonTerminator Regions, GeneticBacillalesBacillus subtilisBacterial CapsulesBase SequenceGene Expression Regulation, BacterialMolecular Sequence DataNucleic Acid ConformationRNA, BacterialSequence AlignmentTranscription, GeneticRNA, Bacterial

Identifiers

PMID20374491
OpenAlexW2160466762

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.