Evidence map›Paper›PMID 23913319›Full record

ArticleJournal of bacteriology2013

Pilin and sortase residues critical for endocarditis- and biofilm-associated pilus biogenesis in Enterococcus faecalis.

Hailyn V Nielsen, Ana L Flores-Mireles, Andrew L Kau, Kimberly A Kline, Jerome S Pinkner, Fabrice Neiers, Staffan Normark, Birgitta Henriques-Normark, Michael G Caparon, Scott J Hultgren

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

37 citing papers in PubMed, 83 citations in OpenAlex.

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  14. c-di-AMP Is Essential for the Virulence ofInfection and immunity · 2021
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  19. Cell-to-cell interaction requires optimal positioning of a pilus tip adhesin modulated by gram-positive transpeptidase enzymes.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  20. Review
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

10 authors at 2 institutions in 2 countries.

Hailyn V NielsenDepartment of Molecular Microbiology and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, USA.
Ana L Flores-Mireles
Andrew L Kau
Kimberly A Kline
Jerome S Pinkner
Fabrice Neiers
Staffan Normark
Birgitta Henriques-Normark
Michael G Caparon
Scott J Hultgren
Washington University in St. Louis · USKarolinska Institutet · SE

Funding

MOLECULAR BASIS OF E. COLI ADHESINS IN BLADDER DISORDERSR01DK051406 · NIDDK · WASHINGTON UNIVERSITY · PI SCOTT J. HULTGREN · 1997 to 2026
$8.8M
LOCALIZED VIRULENCE FACTOR ASSEMBLY IN ENTEROCOCCUS FAECALIS: COORDINATION AND TAK99AI093860 · NIAID · WASHINGTON UNIVERSITY · PI KLINE, KIMBERLY ANN · 2011 to 2011
$90k
NIAID NIH HHS 1K99AI093860-01NIAID NIH HHS K99 AI093860NIDDK NIH HHS DK51406NIDDK NIH HHS DK51406-12S1NIDDK NIH HHS R01 DK051406
6 · The paper itself

Abstract

Enterococci commonly cause hospital-acquired infections, such as infective endocarditis and catheter-associated urinary tract infections. In animal models of these infections, a long hairlike extracellular protein fiber known as the endocarditis- and biofilm-associated (Ebp) pilus is an important virulence factor for Enterococcus faecalis. For Ebp and other sortase-assembled pili, the pilus-associated sortases are essential for fiber formation as they create covalent isopeptide bonds between the sortase recognition motif and the pilin-like motif of the pilus subunits. However, the molecular requirements governing the incorporation of the three pilus subunits (EbpA, EbpB, and EbpC) have not been investigated in E. faecalis. Here, we show that a Lys residue within the pilin-like motif of the EbpC subunit was necessary for EbpC polymerization. However, incorporation of EbpA into the pilus fiber only required its sortase recognition motif (LPXTG), while incorporation of EbpB only required its pilin-like motif. Only the sortase recognition motif would be required for incorporation of the pilus tip subunit, while incorporation of the base subunit would only require the pilin recognition motif. Thus, these data support a model with EbpA at the tip and EbpB at the base of an EbpC polymer. In addition, the housekeeping sortase, SrtA, was found to process EbpB and its predicted catalytic Cys residue was required for efficient cell wall anchoring of mature Ebp pili. Thus, we have defined molecular interactions involved in fiber polymerization, minor subunit organization, and pilus subcellular compartmentalization in the E. faecalis Ebp pilus system. These studies advance our understanding of unique molecular mechanisms of sortase-assembled pilus biogenesis.

Indexed as

AminoacyltransferasesBacterial ProteinsBiofilmsCell WallCysteine EndopeptidasesEnterococcus faecalisFimbriae, BacterialFimbriae ProteinsGene Expression Regulation, BacterialGene Expression Regulation, EnzymologicMutationAminoacyltransferasesBacterial ProteinsCysteine EndopeptidasesFimbriae Proteinssortase Asortase C

Identifiers

PMID23913319
PMCPMC3807452
OpenAlexW2131714392

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.