Evidence map›Paper›PMID 22356413›Full record

ArticleMolecular microbiology2012

Targeting of csgD by the small regulatory RNA RprA links stationary phase, biofilm formation and cell envelope stress in Escherichia coli.

Franziska Mika, Susan Busse, Alexandra Possling, Janine Berkholz, Natalia Tschowri, Nicole Sommerfeldt, Mihaela Pruteanu, Regine Hengge

Abstract read
In one paragraph

Article in Molecular microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
–field-weighted citation impact
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

79 citing papers in PubMed.

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19 more citing papers are in PubMed but not listed here.

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

8 authors.

Franziska MikaInstitut für Biologie - Mikrobiologie, Freie Universität Berlin, 14195 Berlin, Germany.
Susan Busse
Alexandra Possling
Janine Berkholz
Natalia Tschowri
Nicole Sommerfeldt
Mihaela Pruteanu
Regine Hengge

Funding

European Research Council 249780
6 · The paper itself

Abstract

RprA is a small regulatory RNA known to weakly affect the translation of σ(S) (RpoS) in Escherichia coli. Here we demonstrate that csgD, which encodes a stationary phase-induced biofilm regulator, as well as ydaM, which encodes a diguanylate cyclase involved in activating csgD transcription, are novel negatively controlled RprA targets. As shown by extensive mutational analysis, direct binding of RprA to the 5'-untranslated and translational initiation regions of csgD mRNA inhibits translation and reduces csgD mRNA levels. In the case of ydaM mRNA, RprA base-pairs directly downstream of the translational start codon. In a feedforward loop, RprA can thus downregulate > 30 YdaM/CsgD-activated genes including those for adhesive curli fimbriae. However, during early stationary phase, when csgD transcription is strongly activated, the synthesis of csgD mRNA exceeds that of RprA, which allows the accumulation of CsgD protein. This situation is reversed when csgD transcription is shut off - for instance, later in stationary phase or during biofilm formation - or by conditions that further activate RprA expression via the Rcs two-component system. Thus, antagonistic regulation of csgD and RprA at the mRNA level integrates cell envelope stress signals with global gene expression during stationary phase and biofilm formation.

Indexed as

Bacterial ProteinsBinding SitesBiofilmsCell WallEscherichia coliEscherichia coli ProteinsGene Expression Regulation, BacterialPhosphorus-Oxygen LyasesProtein BiosynthesisRegulonRNA, BacterialRNA, MessengerSigma FactorTrans-ActivatorsBacterial ProteinsCrl protein, BacteriaCsgD protein, E coliEscherichia coli ProteinsPhosphorus-Oxygen LyasesRNA, BacterialRNA, MessengerSigma Factorsigma factor KatF protein, BacteriaTrans-ActivatorsYdaM protein, E coli

Identifiers

PMID22356413
PMCPMC3465796

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Registered trials

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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.