Evidence map›Paper›PMID 20176788›Full record

ReviewInfection and immunity2010

Phylogenomics reveals a diverse Rickettsiales type IV secretion system.

Joseph J Gillespie, Kelly A Brayton, Kelly P Williams, Marco A Quevedo Diaz, Wendy C Brown, Abdu F Azad, Bruno W Sobral

Abstract readReview
In one paragraph

Review in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing 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

71 citing papers in PubMed.

  1. Adaptation ofmSphere · 2026
    Article
  2. Review
  3. Article
  4. Review
  5. PathogenicJournal of bacteriology · 2024
    Review
  6. Article
  7. Article
  8. mSphere · 2023
    Article
  9. Review
  10. Article
  11. bioRxiv : the preprint server for biology · 2023
    Article
  12. Metagenome diversity illuminates origins of pathogen effectors.bioRxiv : the preprint server for biology · 2023
    Article
  13. Article
  14. Article
  15. Subversion of host cell signaling: The arsenal of Rickettsial species.Frontiers in cellular and infection microbiology · 2022
    Review
  16. Review
  17. Article
  18. Ticks: More Than Just a Pathogen Delivery Service.Frontiers in cellular and infection microbiology · 2021
    Article
  19. The "Biological Weapons" ofFrontiers in cellular and infection microbiology · 2021
    Review
  20. Article

11 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

7 authors.

Joseph J GillespieVirginia Bioinformatics Institute at Virginia Tech, Blacksburg, Virginia 24061, USA. jgille@vbi.vt.edu
Kelly A Brayton
Kelly P Williams
Marco A Quevedo Diaz
Wendy C Brown
Abdu F Azad
Bruno W Sobral

Funding

MURINE TYPHUS: VECTOR BIOLOGY AND TRANSMISSIONR01AI017828 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI RAHMAN, MOHAMMED SAYEEDUR · 1985 to 2022
$10.2M
Immunogenicity of the Type IV Secretin SystemR01AI053692 · NIAID · WASHINGTON STATE UNIVERSITY · PI BROWN, WENDY CATHERINE · 2003 to 2012
$3.3M
Generation of Genetically Attenuated RickettsiaeR01AI059118 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI AZAD, ABDU F · 2005 to 2009
$2.1M
NIAID NIH HHS R01 AI017828NIAID NIH HHS R01AI017828NIAID NIH HHS R01 AI053692NIAID NIH HHS R01AI053692NIAID NIH HHS R01 AI059118NIAID NIH HHS R01AI59118
6 · The paper itself

Abstract

With an obligate intracellular lifestyle, Alphaproteobacteria of the order Rickettsiales have inextricably coevolved with their various eukaryotic hosts, resulting in small, reductive genomes and strict dependency on host resources. Unsurprisingly, large portions of Rickettsiales genomes encode proteins involved in transport and secretion. One particular transporter that has garnered recent attention from researchers is the type IV secretion system (T4SS). Homologous to the well-studied archetypal vir T4SS of Agrobacterium tumefaciens, the Rickettsiales vir homolog (rvh) T4SS is characterized primarily by duplication of several of its genes and scattered genomic distribution of all components in several conserved islets. Phylogeny estimation suggests a single event of ancestral acquirement of the rvh T4SS, likely from a nonalphaproteobacterial origin. Bioinformatics analysis of over 30 Rickettsiales genome sequences illustrates a conserved core rvh scaffold (lacking only a virB5 homolog), with lineage-specific diversification of several components (rvhB1, rvhB2, and rvhB9b), likely a result of modifications to cell envelope structure. This coevolution of the rvh T4SS and cell envelope morphology is probably driven by adaptations to various host cells, identifying the transporter as an important target for vaccine development. Despite the genetic intractability of Rickettsiales, recent advancements have been made in the characterization of several components of the rvh T4SS, as well as its putative regulators and substrates. While current data favor a role in effector translocation, functions in DNA uptake and release and/or conjugation cannot at present be ruled out, especially considering that a mechanism for plasmid transfer in Rickettsia spp. has yet to be proposed.

Indexed as

Genetic VariationPhylogenyBacterial ProteinsEvolution, MolecularMacromolecular SubstancesMembrane Transport ProteinsModels, BiologicalModels, MolecularRickettsiaceaeVirulence FactorsBacterial ProteinsMacromolecular SubstancesMembrane Transport ProteinsVirulence Factors

Identifiers

PMID20176788
PMCPMC2863512

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.