Evidence map›Paper›PMID 19749048›Full record

ArticleJournal of bacteriology2009

Identification of functional LsrB-like autoinducer-2 receptors.

Catarina S Pereira, Anna K de Regt, Patrícia H Brito, Stephen T Miller, Karina B Xavier

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

59 citing papers in PubMed, 130 citations in OpenAlex.

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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 3 institutions in 2 countries.

Catarina S PereiraInstituto Gulbenkian de Ciência, 2781-901 Oeiras, Portugal.
Anna K de Regt
Patrícia H Brito
Stephen T Miller
Karina B Xavier
Instituto Gulbenkian de Ciência · PTSwarthmore College · USInstituto de Biologia Experimental e Tecnológica · PT

Funding

Characterization of receptors of the bacterial signaling molecule autoinducer-2R15AI074041 · NIAID · SWARTHMORE COLLEGE · PI MILLER, STEPHEN T. · 2008 to 2008
$198k
NIAID NIH HHS AI074041NIAID NIH HHS R15 AI074041
6 · The paper itself

Abstract

Although a variety of bacterial species have been reported to use the interspecies communication signal autoinducer-2 (AI-2) to regulate multiple behaviors, the molecular mechanisms of AI-2 recognition and signal transduction remain poorly understood. To date, two types of AI-2 receptors have been identified: LuxP, present in Vibrio spp., and LsrB, first identified in Salmonella enterica serovar Typhimurium. In S. Typhimurium, LsrB is the ligand binding protein of a transport system that enables the internalization of AI-2. Here, using both sequence analysis and structure prediction, we establish a set of criteria for identifying functional AI-2 receptors. We test our predictions experimentally, assaying key species for their abilities to import AI-2 in vivo, and test their LsrB orthologs for AI-2 binding in vitro. Using these experimental approaches, we were able to identify AI-2 receptors in organisms belonging to phylogenetically distinct families such as the Enterobacteriaceae, Rhizobiaceae, and Bacillaceae. Phylogenetic analysis of LsrB orthologs indicates that this pattern could result from one single origin of the functional LsrB gene in a gammaproteobacterium, suggesting possible posterior independent events of lateral gene transfer to the Alphaproteobacteria and Firmicutes. Finally, we used mutagenesis to show that two AI-2-interacting residues are essential for the AI-2 binding ability. These two residues are conserved in the binding sites of all the functional AI-2 binding proteins but not in the non-AI-2-binding orthologs. Together, these results strongly support our ability to identify functional LsrB-type AI-2 receptors, an important step in investigations of this interspecies signal.

Indexed as

Agrobacterium tumefaciensBacillaceaeBacterial ProteinsBinding SitesEnterobacteriaceaeEscherichia coliGenome, BacterialPhylogenyProtein BindingReceptors, Cell SurfaceRhizobiaceaeRhizobium leguminosarumSalmonella typhimuriumStructure-Activity RelationshipBacterial ProteinsLsrB protein, Salmonella typhimuriumReceptors, Cell Surface

Identifiers

PMID19749048
PMCPMC2772480
OpenAlexW2011102133

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.