Evidence map›Paper›PMID 22467786›Full record

ArticleJournal of bacteriology2012

Analysis of the CtrA pathway in Magnetospirillum reveals an ancestral role in motility in alphaproteobacteria.

Shannon E Greene, Matteo Brilli, Emanuele G Biondi, Arash Komeili

Abstract read
In one paragraph

Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing 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

33 citing papers in PubMed.

  1. Article
  2. Proceedings of the National Academy of Sciences of the United States of America · 2025
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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.

Shannon E GreenePlant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA.
Matteo Brilli
Emanuele G Biondi
Arash Komeili

Funding

POSTGRADUATE TRAINING PROGRAM IN GENETICST32GM007127 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI DILLIN, ANDREW G · 1985 to 2016
$7.9M
Molecular Mechanisms of Organelle Assembly by the Prokaryotic Actin Homolog MamKR01GM084122 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI KOMEILI, ARASH · 2009 to 2017
$2.8M
NIGMS NIH HHS GM07127NIGMS NIH HHS R01 GM084122NIGMS NIH HHS R01GM084122NIGMS NIH HHS T32 GM007127
6 · The paper itself

Abstract

Developmental events across the prokaryotic life cycle are highly regulated at the transcriptional and posttranslational levels. Key elements of a few regulatory networks are conserved among phylogenetic groups of bacteria, although the features controlled by these conserved systems are as diverse as the organisms encoding them. In this work, we probed the role of the CtrA regulatory network, conserved throughout the Alphaproteobacteria, in the magnetotactic bacterium Magnetospirillum magneticum strain AMB-1, which possesses unique intracellular organization and compartmentalization. While we have shown that CtrA in AMB-1 is not essential for viability, it is required for motility, and its putative phosphorylation state dictates the ability of CtrA to activate the flagellar biosynthesis gene cascade. Gene expression analysis of strains expressing active and inactive CtrA alleles points to the composition of the extended CtrA regulon, including both direct and indirect targets. These results, combined with a bioinformatic study of the AMB-1 genome, enabled the prediction of an AMB-1-specific CtrA binding site. Further, phylogenetic studies comparing CtrA sequences from alphaproteobacteria in which the role of CtrA has been experimentally examined reveal an ancestral role of CtrA in the regulation of motility and suggest that its essential functions in other alphaproteobacteria were acquired subsequently.

Indexed as

AlphaproteobacteriaAmino Acid SequenceBacterial ProteinsBinding SitesBiological EvolutionGene Expression Regulation, BacterialMagnetospirillumMicrobial ViabilityMolecular Sequence DataPhosphorylationPhylogenyRegulonTranscription FactorsBacterial ProteinsTranscription Factors

Identifiers

PMID22467786
PMCPMC3370617

What OpenQuestion holds

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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.