Evidence map›Paper›PMID 18063717›Full record

ReviewMicrobiology and molecular biology reviews : MMBR2007

Evolution of the chaperone/usher assembly pathway: fimbrial classification goes Greek.

Sean-Paul Nuccio, Andreas J Bäumler

Abstract readReview
In one paragraph

Review in Microbiology and molecular biology reviews : MMBR, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 199 papers.

0numbers the graph read from it
0cells of the map it votes in
199citing 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

199 citing papers in PubMed.

  1. Enteric-colonizedGut microbes · 2026
    Article
  2. Review
  3. Article
  4. AnResearch square · 2026
    Article
  5. Article
  6. Novel pESI-encoded autotransporter adhesin PeaP of epidemicbioRxiv : the preprint server for biology · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Infection strategies ofGut microbes reports · 2026
    Review
  11. Article
  12. Review
  13. Genomic profiling of enterotoxigenicMicrobial genomics · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Infection biology ofEcoSal Plus · 2024
    Review
  20. Article

139 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

2 authors.

Sean-Paul NuccioDepartment of Medical Microbiology and Immunology, School of Medicine, University of California at Davis, One Shields Ave., Davis, CA 95616-8645, USA.
Andreas J Bäumler

Funding

Virulence Factors of SalmonellaR01AI044170 · NIAID · UNIVERSITY OF CALIFORNIA DAVIS · PI BAUMLER, ANDREAS J · 1999 to 2022
$8.5M
Analysis of Salmonella typhimurium Fimbrial AntigensR01AI040124 · NIAID · UNIVERSITY OF CALIFORNIA DAVIS · PI BAUMLER, ANDREAS J · 2002 to 2011
$3.6M
Virulence Mechanisms of Salmonella TyphiR21AI065534 · NIAID · UNIVERSITY OF CALIFORNIA DAVIS · PI BAUMLER, ANDREAS J · 2005 to 2006
$411k
S TYPHIMURIUM ADHESION TO PEYERS PATCHESR29AI040124 · NIAID · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI BAUMLER, ANDREAS J · 1997 to 2001
$207k
NIAID NIH HHS AI040124NIAID NIH HHS AI044170NIAID NIH HHS AI065534NIAID NIH HHS R01 AI040124NIAID NIH HHS R01 AI044170NIAID NIH HHS R21 AI065534NIAID NIH HHS R29 AI040124
6 · The paper itself

Abstract

Many Proteobacteria use the chaperone/usher pathway to assemble proteinaceous filaments on the bacterial surface. These filaments can curl into fimbrial or nonfimbrial surface structures (e.g., a capsule or spore coat). This article reviews the phylogeny of operons belonging to the chaperone/usher assembly class to explore the utility of establishing a scheme for subdividing them into clades of phylogenetically related gene clusters. Based on usher amino acid sequence comparisons, our analysis shows that the chaperone/usher assembly class is subdivided into six major phylogenetic clades, which we have termed alpha-, beta-, gamma-, kappa-, pi-, and sigma-fimbriae. Members of each clade share related operon structures and encode fimbrial subunits with similar protein domains. The proposed classification system offers a simple and convenient method for assigning newly discovered chaperone/usher systems to one of the six major phylogenetic groups.

Indexed as

OperonBacterial ProteinsEvolution, MolecularFimbriae, BacterialGenes, BacterialMolecular ChaperonesMultigene FamilyPhylogenyProteobacteriaBacterial ProteinsMolecular Chaperones

Identifiers

PMID18063717
PMCPMC2168650

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.