Evidence map›Paper›PMID 12595441›Full record

ArticleInfection and immunity2003

Phenotypic switching in Mycoplasma gallisepticum hemadsorption is governed by a high-frequency, reversible point mutation.

Florian Winner, Ivana Markovà, Peter Much, Albin Lugmair, Karin Siebert-Gulle, Gunther Vogl, Renate Rosengarten, Christine Citti

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

14 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
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  4. TheInfection and immunity · 2017
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  13. Review
  14. Phase and antigenic variation in bacteria.Clinical microbiology reviews · 2004
    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

8 authors at 1 institution in 1 country.

Florian WinnerInstitute of Bacteriology, Mycology and Hygiene, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria.
Ivana Markovà
Peter Much
Albin Lugmair
Karin Siebert-Gulle
Gunther Vogl
Renate Rosengarten
Christine Citti
University of Veterinary Medicine Vienna · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mycoplasma gallisepticum is a flask-shaped organism that commonly induces chronic respiratory disease in chickens and infectious sinusitis in turkeys. Phenotypic switching in M. gallisepticum hemadsorption (HA) was found to correlate with phase variation of the GapA cytadhesin concurrently with that of the CrmA protein, which exhibits cytadhesin-related features and is encoded by a gene located downstream of the gapA gene as part of the same transcription unit. In clones derived from strain R(low), detailed genetic analyses further revealed that on-off switching in GapA expression is governed by a reversible base substitution occurring at the beginning of the gapA structural gene. In HA(-) variants, this event generates a stop codon that results in the premature termination of GapA translation and consequently affects the expression of CrmA. Sequences flanking the mutation spot do not feature any repeated motifs that could account for error-prone mutation via DNA slippage and the exact mechanism underlying this high-frequency mutational event remains to be elucidated. An HA(-) mutant deficient in producing CrmA, mHAD3, was obtained by disrupting the crmA gene by using transposition mutagenesis. Despite a fully functional gapA gene, the amount of GapA detected in this mutant was considerably lower than in HA(+) clonal variants, suggesting that, in absence of CrmA, GapA might be subjected to a higher turnover.

Indexed as

HemadsorptionViral ProteinsAdhesins, BacterialAmino Acid SequenceBase SequenceErythrocytesMolecular Sequence DataMycoplasmaPhenotypePoint MutationSerpinsTranscription, GeneticAdhesins, BacterialGapA cytadhesininterleukin-1beta-converting enzyme inhibitorSerpinsViral Proteins

Identifiers

PMID12595441
PMCPMC148866
OpenAlexW2108063342

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.