Evidence map›Paper›PMID 22773790›Full record

ArticleJournal of bacteriology2012

Dual RpoH sigma factors and transcriptional plasticity in a symbiotic bacterium.

Melanie J Barnett, Alycia N Bittner, Carol J Toman, Valerie Oke, Sharon R Long

Open access · bronzeAbstract 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 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
7.2field-weighted citation impact, top 3% 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

45 citing papers in PubMed, 68 citations in OpenAlex.

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  16. Impact of Hydrogen on the Transcriptome ofPolish journal of microbiology · 2020
    Article
  17. A high-throughput system to identify inhibitors ofProceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  18. Article
  19. Review
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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

5 authors at 2 institutions in 1 country.

Melanie J BarnettDepartment of Biology, Stanford University, Stanford, California, USA.
Alycia N Bittner
Carol J Toman
Valerie Oke
Sharon R Long
Stanford University · USUniversity of Pittsburgh · US

Funding

Control of Symbiotic Gene Expression in Sinorhizobium melilotiR01GM093628 · NIGMS · STANFORD UNIVERSITY · PI LONG, SHARON R · 2010 to 2017
$7.0M
NIGMS NIH HHS GM093628NIGMS NIH HHS R01 GM093628
6 · The paper itself

Abstract

Sinorhizobium meliloti can live as a soil saprophyte and can engage in a nitrogen-fixing symbiosis with plant roots. To succeed in such diverse environments, the bacteria must continually adjust gene expression. Transcriptional plasticity in eubacteria is often mediated by alternative sigma (σ) factors interacting with core RNA polymerase. The S. meliloti genome encodes 14 of these alternative σ factors, including two putative RpoH ("heat shock") σ factors. We used custom Affymetrix symbiosis chips to characterize the global transcriptional response of S. meliloti rpoH1, rpoH2, and rpoH1 rpoH2 mutants during heat shock and stationary-phase growth. Under these conditions, expression of over 300 genes is dependent on rpoH1 and rpoH2. We mapped transcript start sites of 69 rpoH-dependent genes using 5' RACE (5' rapid amplification of cDNA ends), which allowed us to determine putative RpoH1-dependent, RpoH2-dependent, and dual-promoter (RpoH1- and RpoH2-dependent) consensus sequences that were each used to search the genome for other potential direct targets of RpoH. The inferred S. meliloti RpoH promoter consensus sequences share features of Escherichia coli RpoH promoters but lack extended -10 motifs.

Indexed as

SymbiosisTranscription, GeneticBinding SitesConsensus SequenceEscherichia coliGene DeletionGene Expression ProfilingHeat-Shock ProteinsMicroarray AnalysisPromoter Regions, GeneticSigma FactorSinorhizobium melilotiTranscription Initiation SiteHeat-Shock Proteinsheat-shock sigma factor 32Sigma Factor

Identifiers

PMID22773790
PMCPMC3430346
OpenAlexW2118522962

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.