Evidence map›Paper›PMID 9864325›Full record

ArticleJournal of bacteriology1999

Sequence diversity of flagellin (fliC) alleles in pathogenic Escherichia coli.

S D Reid, R K Selander, T S Whittam

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of bacteriology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
4.5field-weighted citation impact, top 6% 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

66 citing papers in PubMed, 116 citations in OpenAlex.

  1. Article
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  4. Genome characterization of a multi-drug resistantFrontiers in microbiology · 2024
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  7. Whole-genome sequences from wild-type and laboratory-evolved strains define the alleleome and establish its hallmarks.Proceedings of the National Academy of Sciences of the United States of America · 2023
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6 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.

S D ReidInstitute of Molecular Evolutionary Genetics and Department of Biology, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
R K Selander
T S Whittam
Pennsylvania State University · US

Funding

EVOLUTION OF DURABILITY IN EMERGING BACTERIAL PATHOGENSR01AI042391 · NIAID · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI WHITTAM, THOMAS STEWART · 1998 to 2000
$165k
MOLECULAR POPULATION GENETICS OF PATHOGENIC BACTERIAR01AI022144 · NIAID · UNIVERSITY OF ROCHESTER · PI SELANDER, ROBERT K · 1985 to 1988
–
MOLECULAR POPULATION GENETICS OF PATHOGENIC BACTERIAR37AI022144 · NIAID · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI SELANDER, ROBERT K · 1989 to 1998
–
NIAID NIH HHS AI 22144NIAID NIH HHS AI 42391
6 · The paper itself

Abstract

To study the molecular evolution of flagellin, the protein subunit specifying flagellar (H) antigens, the fliC genes from 15 pathogenic strains of Escherichia coli were amplified by PCR and sequenced. Comparison of fliC sequences of H6 and H7 strains revealed that alleles have a mosaic structure indicating the occurrence of past horizontal transfer of DNA segments between strains. The close similarity of H7 sequences also indicates the exchange of an entire fliC H7 allele between distant clonal lineages. In addition, the ratio of silent substitutions to amino acid replacements suggests that a short segment in the central region of fliC has been under positive selection in the divergence of H6 and H7 alleles. Phylogenetic analysis demonstrates that the fliC sequences of O157:H7 and O55:H7 serotypes are nearly identical and highly divergent from those of E. coli strains expressing H6 and H2 flagellar antigens. A nonmotile clone of sorbitol-fermenting O157 has rapidly accumulated multiple mutations in fliC, presumably as a result of the silencing of flagellin expression.

Indexed as

Genes, BacterialAllelesAmino Acid SequenceBase SequenceCloning, MolecularDNA, BacterialDNA PrimersEscherichia coliEscherichia coli O157Evolution, MolecularFlagellinGenetic VariationHumansMolecular Sequence DataMutationPhylogenyDNA, BacterialDNA PrimersFlagellin

Identifiers

PMID9864325
PMCPMC103544
OpenAlexW1785668829

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.