Evidence map›Paper›PMID 19304855›Full record

ArticleJournal of bacteriology2009

Genetic mapping of secretion and functional determinants of the Vibrio cholerae TcpF colonization factor.

Shelly J Krebs, Thomas J Kirn, Ronald K Taylor

Abstract 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 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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

9 citing papers in PubMed.

  1. Journal of bacteriology · 2024
    Review
  2. Mechanism of secretion of TcpF by theProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  3. Article
  4. Article
  5. Environmental role of pathogenic traits inJournal of bacteriology · 2018
    Article
  6. Article
  7. Article
  8. Article
  9. Article
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.

Shelly J KrebsDartmouth Medical School, Department of Microbiology and Immunology, Hanover, NH 03755, USA.
Thomas J Kirn
Ronald K Taylor

Funding

Molecular and Cellular Biology at DartmouthT32GM008704 · NIGMS · DARTMOUTH COLLEGE · PI COMPTON, DUANE A. · 1998 to 2018
$6.8M
Genetic Determinants of Virulence in Vibrio choleraeR37AI025096 · NIAID · DARTMOUTH COLLEGE · PI TAYLOR, RONALD K · 2007 to 2015
$4.3M
GENTICS DETERMINATION OF VIRULENCE OF VIBRIO CHOLERAER01AI025096 · NIAID · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI SKORUPSKI, KAREN A · 1989 to 2016
$3.1M
GENETIC DETERMINANTS OF VIRULENCE IN VIBRIO CHOLERAER22AI025096 · NIAID · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI TAYLOR, RONALD K · 1987 to 1991
–
NIAID NIH HHS AI25096NIAID NIH HHS R01 AI025096NIAID NIH HHS R37 AI025096NIGMS NIH HHS T32 GM008704NIGMS NIH HHS T32GM08704
6 · The paper itself

Abstract

Colonization of the human small intestine by Vibrio cholerae requires the type IV toxin-coregulated pilus (TCP). TcpF, which is encoded within the tcp operon, is secreted from the bacterial cell by the TCP apparatus and is also essential for colonization. Bacteria lacking tcpF are deficient in colonization, and anti-TcpF antibodies are protective in the infant mouse cholera model. In order to elucidate the regions of the protein that are required for secretion through the TCP apparatus and for its function in colonization, random mutagenesis of tcpF was performed. Analysis of these mutants suggests that multiple regions throughout the protein influence extracellular secretion and that determinants near the C terminus are important for the function of TcpF in colonization. The TcpF proteins of certain environmental V. cholerae isolates with 31% to 66% identity to pathogenic V. cholerae TcpF showed higher similarity in regions identified as secretion determinants but diverged in regions found to be important for colonization. These environmental TcpF proteins are secreted from the pathogenic strain; however, they do not mediate colonization in the infant mouse model. Here we provide genetic evidence pointing toward regions of TcpF that influence secretion, as well as regions that play an important role in in vivo colonization.

Indexed as

Amino Acid SequenceAnimalsAnimals, NewbornBacterial ProteinsBlotting, WesternChromosome MappingMiceMolecular Sequence DataMutagenesisSequence Homology, Amino AcidTranscription FactorsVibrio choleraeBacterial ProteinstcpN protein, Vibrio choleraeTranscription Factors

Identifiers

PMID19304855
PMCPMC2681887

What OpenQuestion holds

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Registered trials

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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.