Evidence map›Paper›PMID 25370836›Full record

ArticleGenome biology2014

Comparative analyses of Legionella species identifies genetic features of strains causing Legionnaires' disease.

Laura Gomez-Valero, Christophe Rusniok, Monica Rolando, Mario Neou, Delphine Dervins-Ravault, Jasmin Demirtas, Zoe Rouy, Robert J Moore, Honglei Chen, Nicola K Petty and 9 more

Open access · goldAbstract read
In one paragraph

Article in Genome biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
8.7field-weighted citation impact, top 1% 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

70 citing papers in PubMed, 99 citations in OpenAlex.

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10 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

19 authors at 11 institutions in 4 countries.

Laura Gomez-Valero
Christophe Rusniok
Monica Rolando
Mario Neou
Delphine Dervins-Ravault
Jasmin Demirtas
Zoe Rouy
Robert J Moore
Honglei Chen
Nicola K Petty
Sophie Jarraud
Jerome Etienne
Michael Steinert
Klaus Heuner
Simonetta Gribaldo
Claudine Médigue
Gernot Glöckner
Elizabeth L Hartland
Carmen Buchrieser
Centre National de la Recherche Scientifique · FRInstitut Pasteur · FRAustralian Centre for Disease Preparedness · AUÉcole Normale Supérieure de Lyon · FRGenoscope · FRLaboratoire National de Référence · MARobert Koch Institute · DETechnische Universität Braunschweig · DEThe University of Melbourne · AUUniversity of Cologne · DEUniversity of Technology Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe genus Legionella comprises over 60 species. However, L. pneumophila and L. longbeachae alone cause over 95% of Legionnaires’ disease. To identify the genetic bases underlying the different capacities to cause disease we sequenced and compared the genomes of L. micdadei, L. hackeliae and L. fallonii (LLAP10), which are all rarely isolated from humans.

resultsWe show that these Legionella species possess different virulence capacities in amoeba and macrophages, correlating with their occurrence in humans. Our comparative analysis of 11 Legionella genomes belonging to five species reveals highly heterogeneous genome content with over 60% representing species-specific genes; these comprise a complete prophage in L. micdadei, the first ever identified in a Legionella genome. Mobile elements are abundant in Legionella genomes; many encode type IV secretion systems for conjugative transfer, pointing to their importance for adaptation of the genus. The Dot/Icm secretion system is conserved, although the core set of substrates is small, as only 24 out of over 300 described Dot/Icm effector genes are present in all Legionella species. We also identified new eukaryotic motifs including thaumatin, synaptobrevin or clathrin/coatomer adaptine like domains.

conclusionsLegionella genomes are highly dynamic due to a large mobilome mainly comprising type IV secretion systems, while a minority of core substrates is shared among the diverse species. Eukaryotic like proteins and motifs remain a hallmark of the genus Legionella. Key factors such as proteins involved in oxygen binding, iron storage, host membrane transport and certain Dot/Icm substrates are specific features of disease-related strains.

Indexed as

Genome, BacterialAmoebaBase SequenceCell LineDisease OutbreaksHigh-Throughput Nucleotide SequencingHumansInterspersed Repetitive SequencesLegionella pneumophilaLegionnaires' DiseaseMacrophagesMolecular Sequence AnnotationSpecies Specificity

Identifiers

PMID25370836
PMCPMC4256840
OpenAlexW2163124684

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.