Evidence map›Paper›PMID 11443098›Full record

ArticleJournal of bacteriology2001

Evolution of an autotransporter: domain shuffling and lateral transfer from pathogenic Haemophilus to Neisseria.

J Davis, A L Smith, W R Hughes, M Golomb

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.6field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Article
  3. Characterization and Distribution of theFrontiers in cellular and infection microbiology · 2017
    Article
  4. Biological Functions of the Secretome ofFrontiers in cellular and infection microbiology · 2017
    Review
  5. Expression of the Gene for Autotransporter AutB ofFrontiers in cellular and infection microbiology · 2016
    Article
  6. Review
  7. Inflammatory response of Haemophilus influenzae biotype aegyptius causing Brazilian Purpuric Fever.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2014
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Type V protein secretion pathway: the autotransporter story.Microbiology and molecular biology reviews : MMBR · 2004
    Review
  20. 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

4 authors at 2 institutions in 1 country.

J DavisDivision of Biological Sciences and Department of Molecular Microbiology and Immunology, School of Medicine, University of Missouri-Columbia, Columbia, MO 65211, USA.
A L Smith
W R Hughes
M Golomb
University of Missouri · USUniversity of Washington · US

Funding

INVASIVE NONCAPSULATED H. INFLUENZAER01AI044002 · NIAID · UNIVERSITY OF MISSOURI-COLUMBIA · PI SMITH, ARNOLD LEE · 2000 to 2004
$1.6M
UWMBT GENOME CENTERR01HG001475 · NHGRI · UNIVERSITY OF WASHINGTON · PI OLSON, MAYNARD V. · 1996 to 1998
–
NHGRI NIH HHS 5RO1 HG01475NIAID NIH HHS AI 44002NIAID NIH HHS R01 AI044002
6 · The paper itself

Abstract

The genomes of pathogenic Haemophilus influenzae strains are larger than that of Rd KW20 (Rd), the nonpathogenic laboratory strain whose genome has been sequenced. To identify potential virulence genes, we examined genes possessed by Int1, an invasive nonencapsulated isolate from a meningitis patient, but absent from Rd. Int1 was found to have a novel gene termed lav, predicted to encode a member of the AIDA-I/VirG/PerT family of virulence-associated autotransporters (ATs). Associated with lav are multiple repeats of the tetranucleotide GCAA, implicated in translational phase variation of surface molecules. Laterally acquired by H. influenzae, lav is restricted in distribution to a few pathogenic strains, including H. influenzae biotype aegyptius and Brazilian purpuric fever isolates. The DNA sequence of lav is surprisingly similar to that of a gene previously described for Neisseria meningitidis. Sequence comparisons suggest that lav was transferred relatively recently from Haemophilus to Neisseria, shortly before the divergence of N. meningitidis and Neisseria gonorrhoeae. Segments of lav predicted to encode passenger and beta-domains differ sharply in G+C base content, supporting the idea that AT genes have evolved by fusing domains which originated in different genomes. Homology and base sequence comparisons suggest that a novel biotype aegyptius AT arose by swapping an unrelated sequence for the passenger domain of lav. The unusually mobile lav locus joins a growing list of genes transferred from H. influenzae to Neisseria. Frequent gene exchange suggests a common pool of hypervariable contingency genes and may help to explain the origin of invasiveness in certain respiratory pathogens.

Indexed as

Evolution, MolecularGene Transfer, HorizontalAmino Acid SequenceBase SequenceDNA, BacterialHaemophilus influenzaeHumansMolecular Sequence DataNeisseria meningitidisDNA, Bacterial

Identifiers

PMID11443098
PMCPMC95358
OpenAlexW2015916814

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.