Evidence map›Paper›PMID 11029441›Full record

ArticleJournal of bacteriology2000

Acquisition of the rfb-gnd cluster in evolution of Escherichia coli O55 and O157.

P I Tarr, L M Schoening, Y L Yea, T R Ward, S Jelacic, T S Whittam

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.8field-weighted citation impact, top 11% 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

33 citing papers in PubMed, 66 citations in OpenAlex.

  1. Article
  2. Cellular function of the GndA microprotein during heat shock.bioRxiv : the preprint server for biology · 2025
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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

6 authors at 3 institutions in 1 country.

P I TarrChildren's Hospital and Regional Medical Center, Seattle, Washington 98105, USA. tarr@u.washington.edu
L M Schoening
Y L Yea
T R Ward
S Jelacic
T S Whittam
Seattle Children's Hospital · USPennsylvania State University · USUniversity of Washington · US

Funding

EVOLUTION OF VIRULENCE BY GENE ACQUISITIONR01AI047499 · NIAID · WASHINGTON UNIVERSITY · PI TARR, PHILLIP I · 1999 to 2002
$1.1M
EVOLUTION OF DURABILITY IN EMERGING BACTERIAL PATHOGENSR01AI042391 · NIAID · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI WHITTAM, THOMAS STEWART · 1998 to 2000
$165k
NIAID NIH HHS AI 42391NIAID NIH HHS R01 AI047499NIAID NIH HHS R01AI47499
6 · The paper itself

Abstract

The rfb region specifies the structure of lipopolysaccharide side chains that comprise the diverse gram-negative bacterial somatic (O) antigens. The rfb locus is adjacent to gnd, which is a polymorphic gene encoding 6-phosphogluconate dehydrogenase. To determine if rfb and gnd cotransfer, we sequenced gnd in five O55 and 13 O157 strains of Escherichia coli. E. coli O157:H7 has a gnd allele (allele A) that is only 82% identical to the gnd allele (allele D) of closely related E. coli O55:H7. In contrast, gnd alleles of E. coli O55 in distant lineages are >99.9% identical to gnd allele D. Though gnd alleles B and C in E. coli O157 that are distantly related to E. coli O157:H7 are more similar to allele A than to allele D, there are nucleotide differences at 4 to 6% of their sites. Alleles B and C can be found in E. coli O157 in different lineages, but we have found allele A only in E. coli O157 belonging to the DEC5 lineage. DNA 3' to the O55 gnd allele in diverse E. coli lineages has sequences homologous to tnpA of the Salmonella enterica serovar Typhimurium IS200 element, E. coli Rhs elements (including an H-rpt gene), and portions of the O111 and O157 rfb regions. We conclude that rfb and gnd cotransferred into E. coli O55 and O157 in widely separated lineages and that recombination was responsible for recent antigenic shifts in the emergence of pathogenic E. coli O55 and O157.

Indexed as

Genome, BacterialAllelesBacterial ProteinsBase SequenceBiological EvolutionCloning, MolecularEscherichia coliEscherichia coli O157O AntigensPhosphogluconate DehydrogenaseRecombination, GeneticSequence Homology, Nucleic AcidTranscription FactorsBacterial ProteinsO AntigensPhosphogluconate Dehydrogenaserfb protein, BacteriaTnpC protein, Pseudomonas putidaTranscription Factors

Identifiers

PMID11029441
PMCPMC94755
OpenAlexW2120401977

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.