Evidence map›Paper›PMID 18485073›Full record

ArticleMolecular microbiology2008

Molecular characterization of group A Streptococcus maltodextrin catabolism and its role in pharyngitis.

Samuel A Shelburne, David B Keith, Michael T Davenport, Nicola Horstmann, Richard G Brennan, James M Musser

Open access · bronzeAbstract read
In one paragraph

Article in Molecular microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
5.7field-weighted citation impact, top 4% 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

31 citing papers in PubMed, 44 citations in OpenAlex.

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  5. ModelingFrontiers in cellular and infection microbiology · 2019
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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

6 authors at 3 institutions in 1 country.

Samuel A ShelburneSection of Infectious Diseases, Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA.
David B Keith
Michael T Davenport
Nicola Horstmann
Richard G Brennan
James M Musser
Baylor College of Medicine · USThe University of Texas MD Anderson Cancer Center · USMethodist Hospital · US

Funding

Analysis Of Group A Streptococcus-Saliva InteractionK08AI064564 · NIAID · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI SHELBURNE, SAMUEL A · 2006 to 2009
$492k
NIAID NIH HHS K08 AI-064564NIAID NIH HHS K08 AI064564
6 · The paper itself

Abstract

We previously demonstrated that the cell-surface lipoprotein MalE contributes to GAS maltose/maltodextrin utilization, but MalE inactivation does not completely abrogate GAS catabolism of maltose or maltotriose. Using a genome-wide approach, we identified the GAS phosphotransferase system (PTS) responsible for non-MalE maltose/maltotriose transport. This PTS is encoded by an open reading frame (M5005_spy1692) previously annotated as ptsG based on homology with the glucose PTS in Bacillus subtilis. Genetic inactivation of M5005_spy1692 significantly reduced transport rates of radiolabelled maltose and maltotriose, but not glucose, leading us to propose its reannotation as malT for maltose transporter. The DeltamalT, DeltamalE and DeltamalE:malT strains were significantly attenuated in their growth in human saliva and in their ability to catabolize alpha-glucans digested by purified human salivary alpha-amylase. Compared with wild-type, the three isogenic mutant strains were significantly impaired in their ability to colonize the mouse oropharynx. Finally, we discovered that the transcript levels of maltodextrin utilization genes are regulated by competitive binding of the maltose repressor MalR and catabolite control protein A. These data provide novel insights into regulation of the GAS maltodextrin genes and their role in GAS host-pathogen interaction, thereby increasing the understanding of links between nutrient acquisition and virulence in common human pathogens.

Indexed as

AnimalsBacterial ProteinsColony Count, MicrobialGene DeletionGene Expression ProfilingGlucansHumansMaltoseMiceModels, BiologicalPharyngitisPharynxPhosphoenolpyruvate Sugar Phosphotransferase SystemPolysaccharidesSalivaStreptococcus pyogenesBacterial ProteinsGlucansmaltodextrinMaltosemaltotriosephosphoenolpyruvate-glucose phosphotransferasePhosphoenolpyruvate Sugar Phosphotransferase SystemPolysaccharidesTrisaccharides

Identifiers

PMID18485073
PMCPMC2761070
OpenAlexW2044317034

What OpenQuestion holds

Textmetadata
LicenceTDM
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.