Evidence map›Paper›PMID 21324157›Full record

ArticleBMC genomics2011

Multi-genome identification and characterization of chlamydiae-specific type III secretion substrates: the Inc proteins.

Pierre Dehoux, Rhonda Flores, Catherine Dauga, Guangming Zhong, Agathe Subtil

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
5.7field-weighted citation impact, top 3% 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

79 citing papers in PubMed, 135 citations in OpenAlex.

  1. Inclusion Membrane Proteins ofMicroorganisms · 2026
    Review
  2. International journal of systematic and evolutionary microbiology · 2025
    Article
  3. Article
  4. Article
  5. The T3SS structural and effector genes ofFrontiers in cellular and infection microbiology · 2025
    Article
  6. Article
  7. Type III Secretion inMicrobiology and molecular biology reviews : MMBR · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Molecular pathogenesis ofFrontiers in cellular and infection microbiology · 2023
    Review
  13. Review
  14. Genome organization and genomics inFrontiers in cellular and infection microbiology · 2023
    Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. TheInfection and immunity · 2022
    Article
  20. Article

19 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

5 authors at 3 institutions in 2 countries.

Pierre DehouxInstitut Pasteur, Unité de Biologie des Interactions Cellulaires, Paris, France.
Rhonda Flores
Catherine Dauga
Guangming Zhong
Agathe Subtil
Genopole (France) · FRThe University of Texas Health Science Center at San Antonio · USUrba 2000 · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChlamydiae are obligate intracellular bacteria that multiply in a vacuolar compartment, the inclusion. Several chlamydial proteins containing a bilobal hydrophobic domain are translocated by a type III secretion (TTS) mechanism into the inclusion membrane. They form the family of Inc proteins, which is specific to this phylum. Based on their localization, Inc proteins likely play important roles in the interactions between the microbe and the host. In this paper we sought to identify and analyze, using bioinformatics tools, all putative Inc proteins in published chlamydial genomes, including an environmental species.

resultsInc proteins contain at least one bilobal hydrophobic domain made of two transmembrane helices separated by a loop of less than 30 amino acids. Using bioinformatics tools we identified 537 putative Inc proteins across seven chlamydial proteomes. The amino-terminal segment of the putative Inc proteins was recognized as a functional TTS signal in 90% of the C. trachomatis and C. pneumoniae sequences tested, validating the data obtained in silico. We identified a macro domain in several putative Inc proteins, and observed that Inc proteins are enriched in segments predicted to form coiled coils. A surprisingly large proportion of the putative Inc proteins are not constitutively translocated to the inclusion membrane in culture conditions.

conclusionsThe Inc proteins represent 7 to 10% of each proteome and show a great degree of sequence diversity between species. The abundance of segments with a high probability for coiled coil conformation in Inc proteins support the hypothesis that they interact with host proteins. While the large majority of Inc proteins possess a functional TTS signal, less than half may be constitutively translocated to the inclusion surface in some species. This suggests the novel finding that translocation of Inc proteins may be regulated by as-yet undetermined mechanisms.

Indexed as

Bacterial Secretion SystemsGenome, BacterialAmino Acid SequenceBacterial ProteinsChlamydiaComputational BiologyHeLa CellsHumansMembrane ProteinsMolecular Sequence DataProtein Interaction Domains and MotifsProtein Structure, SecondaryProtein TransportProteomeSequence AlignmentBacterial ProteinsBacterial Secretion SystemsMembrane ProteinsProteome

Identifiers

PMID21324157
PMCPMC3048545
OpenAlexW2138472384

What OpenQuestion holds

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LicenceCC BY
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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.