Evidence map›Paper›PMID 16855241›Full record

ArticleJournal of bacteriology2006

Enhanced biofilm formation and loss of capsule synthesis: deletion of a putative glycosyltransferase in Porphyromonas gingivalis.

Mary E Davey, Margaret J Duncan

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

73 citing papers in PubMed, 120 citations in OpenAlex.

  1. International journal of molecular sciences · 2025
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  4. Comparative analysis ofMicrobiology spectrum · 2024
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  7. Growth ofJournal of oral microbiology · 2023
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  10. D-arginine Enhances the Effect of Alpha-Amylase on DisassemblingFrontiers in bioengineering and biotechnology · 2022
    Article
  11. Article
  12. Review
  13. A PorX/PorY and σmSphere · 2021
    Article
  14. The dental plaque biofilm matrix.Periodontology 2000 · 2021
    Review
  15. AFrontiers in oral health · 2021
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Characterization ofMicrobiology (Reading, England) · 2019
    Article

13 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

2 authors.

Mary E DaveyDepartment of Molecular Genetics, The Forsyth Institute, 140 The Fenway, Boston, MA 02115, USA. mdavey@forsyth.org
Margaret J Duncan

Funding

P GINGIVALIS GENES INVOLVED IN EPITHELIAL ATTACHMENTR01DE010510 · NIDCR · FORSYTH INSTITUTE · PI DUNCAN, MARGARET J · 1996 to 2005
$2.5M
Biofilm Formation in P. gingivalis: A Role for Capsule ExpressionR21DE017168 · NIDCR · ADA FORSYTH INSTITUTE, INC. · PI DAVEY, MARY ELLEN · 2006 to 2007
$500k
NIDCR NIH HHS R01 DE010510NIDCR NIH HHS R01 DE10510
6 · The paper itself

Abstract

Periodontitis is a biofilm-mediated disease. Porphyromonas gingivalis is an obligate anaerobe consistently associated with severe manifestations of this disease. As an opportunistic pathogen, the ability to proliferate within and disseminate from subgingival biofilm (plaque) is central to its virulence. Here, we report the isolation of a P. gingivalis transposon insertion mutant altered in biofilm development and the reconstruction and characterization of this mutation in three different wild-type strains. The mutation responsible for the altered biofilm phenotype was in a gene with high sequence similarity ( approximately 61%) to a glycosyltransferase gene. The gene is located in a region of the chromosome that includes up to 16 genes predicted to be involved in the synthesis and transport of capsular polysaccharide. The phenotype of the reconstructed mutation in all three wild-type backgrounds is that of enhanced biofilm formation. In addition, in strain W83, a strain that is encapsulated, the glycosyltransferase mutation resulted in a loss of capsule. Further experiments showed that the W83 mutant strain was more hydrophobic and exhibited increased auto-aggregation. Our results indicate that we have identified a gene involved in capsular-polysaccharide synthesis in P. gingivalis and that the production of capsule prevented attachment and the initiation of in vitro biofilm formation on polystyrene microtiter plates.

Indexed as

Genes, BacterialBacterial CapsulesBacterial ProteinsBase SequenceBiofilmsGene DeletionGlycosyltransferasesMolecular Sequence DataPorphyromonas gingivalisBacterial ProteinsGlycosyltransferases

Identifiers

PMID16855241
PMCPMC1540017
OpenAlexW2144873466

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.