Evidence map›Paper›PMID 16963577›Full record

ArticleJournal of bacteriology2006

Two chemosensory operons of Rhodobacter sphaeroides are regulated independently by sigma 28 and sigma 54.

Angela C Martin, Marcus Gould, Elaine Byles, Mark A J Roberts, Judith P Armitage

Abstract read
In one paragraph

Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Signal processing in complex chemotaxis pathways.Nature reviews. Microbiology · 2011
    Review
  9. Article
  10. Article
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

5 authors.

Angela C MartinMicrobiology Unit, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom.
Marcus Gould
Elaine Byles
Mark A J Roberts
Judith P Armitage

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rhodobacter sphaeroides has a complex chemosensory system, with several loci encoding multiple homologues of the components required for chemosensing in Escherichia coli. The operons cheOp2 and cheOp3 each encode complete pathways, and both are essential for chemosensing. The components of cheOp2 are predominantly localized to the cell pole, whereas those encoded by cheOp3 are predominantly targeted to a discrete cluster in the cytoplasm. Here we show that the expression of the two pathways is regulated independently. Overlapping promoters recognized by sigma(28) and sigma(70) RNAP holoenzyme transcribe cheOp2, whereas cheOp3 is regulated by one of the four sigma(54) homologues, RpoN3. The different regulation of these operons may reflect the need for balancing responses to extra- and intracellular signals under different growth conditions.

Indexed as

Gene Expression Regulation, BacterialBacterial ProteinsBase SequenceChemotaxisDNA-Directed RNA PolymerasesMolecular Sequence DataOperonPromoter Regions, GeneticRhodobacter sphaeroidesRNA Polymerase Sigma 54Sigma FactorTranscription Initiation SiteBacterial ProteinsDNA-Directed RNA PolymerasesFliA protein, BacteriaRNA Polymerase Sigma 54RNA polymerase sigma 70Sigma Factor

Identifiers

PMID16963577
PMCPMC1636300

What OpenQuestion holds

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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.