Evidence map›Paper›PMID 16237027›Full record

ArticleJournal of bacteriology2005

NspS, a predicted polyamine sensor, mediates activation of Vibrio cholerae biofilm formation by norspermidine.

Ece Karatan, Tammi R Duncan, Paula I Watnick

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed
5.2field-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

113 citing papers in PubMed, 190 citations in OpenAlex.

  1. Article
  2. Review
  3. The influence of the polyamine synthesis pathways onMicrobiology (Reading, England) · 2025
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Biofilm dispersal patterns revealed using far-red fluorogenic probes.bioRxiv : the preprint server for biology · 2024
    Article
  10. Control of biofilm formation by anProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. Article
  12. Article
  13. Article
  14. Control of Biofilm Formation by anbioRxiv : the preprint server for biology · 2023
    Article
  15. Article
  16. Article
  17. TheMicrobiology (Reading, England) · 2023
    Article
  18. Article
  19. Review
  20. Review

53 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

3 authors at 1 institution in 1 country.

Ece KaratanTufts-New England Medical Center, Department of Geographic Medicine and Infectious Diseases, 750 Washington St., Box 041, Boston, MA 02111, USA.
Tammi R Duncan
Paula I Watnick
Tufts Medical Center · US

Funding

PILOT AND FEASIBILITY STUDIESP30DK034928 · NIDDK · TUFTS MEDICAL CENTER · PI PLAUT, ANDREW GEORGE · 1986 to 2007
$8.5M
Biofilm Development by Vibrio choleraeR01AI050032 · NIAID · TUFTS MEDICAL CENTER · PI WATNICK, PAULA I · 2002 to 2010
$2.2M
Drosophila melanogaster as a model host for Vibrio choleraeR01AI071147 · NIAID · BOSTON CHILDREN'S HOSPITAL · PI WATNICK, PAULA I · 2007 to 2010
$1.7M
NIAID NIH HHS R01 AI050032NIAID NIH HHS R01 AI071147NIAID NIH HHS R01 AI50032NIDDK NIH HHS P30 DK034928NIDDK NIH HHS P30 DK34928
6 · The paper itself

Abstract

Vibrio cholerae is both an environmental bacterium and a human intestinal pathogen. The attachment of bacteria to surfaces in biofilms is thought to be an important feature of the survival of this bacterium both in the environment and within the human host. Biofilm formation occurs when cell-surface and cell-cell contacts are formed to make a three-dimensional structure characterized by pillars of bacteria interspersed with water channels. In monosaccharide-rich conditions, the formation of the V. cholerae biofilm requires synthesis of the VPS exopolysaccharide. MbaA (locus VC0703), an integral membrane protein containing a periplasmic domain as well as cytoplasmic GGDEF and EAL domains, has been previously identified as a repressor of V. cholerae biofilm formation. In this work, we have studied the role of the protein NspS (locus VC0704) in V. cholerae biofilm development. This protein is homologous to PotD, a periplasmic spermidine-binding protein of Escherichia coli. We show that the deletion of nspS decreases biofilm development and transcription of exopolysaccharide synthesis genes. Furthermore, we demonstrate that the polyamine norspermidine activates V. cholerae biofilm formation in an MbaA- and NspS-dependent manner. Based on these results, we propose that the interaction of the norspermidine-NspS complex with the periplasmic portion of MbaA diminishes the ability of MbaA to inhibit V. cholerae biofilm formation. Norspermidine has been detected in bacteria, archaea, plants, and bivalves. We suggest that norspermidine serves as an intercellular signaling molecule that mediates the attachment of V. cholerae to the biotic surfaces presented by one or more of these organisms.

Indexed as

Adaptation, PhysiologicalAmino Acid SequenceBacterial Proteinsbeta-GalactosidaseBiofilmsEscherichia coli ProteinsGene DeletionGene ExpressionGenes, ReporterGrowth SubstancesMembrane Transport ProteinsMolecular Sequence DataPeriplasmic Binding ProteinsPolysaccharides, BacterialSequence Homology, Amino AcidSignal TransductionBacterial Proteinsbeta-GalactosidaseEscherichia coli ProteinsGrowth SubstancesMembrane Transport ProteinsnorspermidinePeriplasmic Binding ProteinsPolysaccharides, BacterialPotD protein, E coliSpermidine

Identifiers

PMID16237027
PMCPMC1273002
OpenAlexW2168119964

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.