Evidence map›Paper›PMID 24417976›Full record

ArticleBMC genomics2014

Genome sequencing and comparative analysis of three Chlamydia pecorum strains associated with different pathogenic outcomes.

Michelle Sait, Morag Livingstone, Ewan M Clark, Nick Wheelhouse, Lucy Spalding, Bryan Markey, Simone Magnino, Frederick A Lainson, Garry S A Myers, David Longbottom

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC genomics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Current status and future directions ofFrontiers in veterinary science · 2026
    Pooled it
  2. Article
  3. Article
  4. Chlamydiosis in Animals.Animals : an open access journal from MDPI · 2024
    Review
  5. Article
  6. Article
  7. Genetic diversity of Chlamydia pecorum detected in sheep flocks from Mexico.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2022
    Article
  8. Completing the Genome Sequence ofPathogens (Basel, Switzerland) · 2021
    Article
  9. Pathogens (Basel, Switzerland) · 2021
    Article
  10. Molecular Detection and Identification ofPathogens (Basel, Switzerland) · 2021
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Characterization of theInfection and immunity · 2018
    Article
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  17. Article
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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

10 authors at 5 institutions in 5 countries.

Michelle Sait
Morag Livingstone
Ewan M Clark
Nick Wheelhouse
Lucy Spalding
Bryan Markey
Simone Magnino
Frederick A Lainson
Garry S A Myers
David LongbottomMoredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, Midlothian EH26 0PZ, UK. david.longbottom@moredun.ac.uk.
Moredun Research Institute · GBIstituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna "Bruno Ubertini" · ITThe University of Melbourne · AUUniversity College Dublin · IEUniversity of Maryland, Baltimore · US

Funding

Biotechnology and Biological Sciences Research Council BB/E018939/1
6 · The paper itself

Abstract

backgroundChlamydia pecorum is the causative agent of a number of acute diseases, but most often causes persistent, subclinical infection in ruminants, swine and birds. In this study, the genome sequences of three C. pecorum strains isolated from the faeces of a sheep with inapparent enteric infection (strain W73), from the synovial fluid of a sheep with polyarthritis (strain P787) and from a cervical swab taken from a cow with metritis (strain PV3056/3) were determined using Illumina/Solexa and Roche 454 genome sequencing.

resultsGene order and synteny was almost identical between C. pecorum strains and C. psittaci. Differences between C. pecorum and other chlamydiae occurred at a number of loci, including the plasticity zone, which contained a MAC/perforin domain protein, two copies of a >3400 amino acid putative cytotoxin gene and four (PV3056/3) or five (P787 and W73) genes encoding phospholipase D. Chlamydia pecorum contains an almost intact tryptophan biosynthesis operon encoding trpABCDFR and has the ability to sequester kynurenine from its host, however it lacks the genes folA, folKP and folB required for folate metabolism found in other chlamydiae. A total of 15 polymorphic membrane proteins were identified, belonging to six pmp families. Strains possess an intact type III secretion system composed of 18 structural genes and accessory proteins, however a number of putative inc effector proteins widely distributed in chlamydiae are absent from C. pecorum. Two genes encoding the hypothetical protein ORF663 and IncA contain variable numbers of repeat sequences that could be associated with persistence of infection.

conclusionsGenome sequencing of three C. pecorum strains, originating from animals with different disease manifestations, has identified differences in ORF663 and pseudogene content between strains and has identified genes and metabolic traits that may influence intracellular survival, pathogenicity and evasion of the host immune system.

Indexed as

Genome, BacterialAnimalsBacterial ProteinsBase SequenceCaco-2 CellsCattleChlamydiaCytotoxinsFecesFolic AcidHigh-Throughput Nucleotide SequencingHumansMembrane ProteinsMolecular Sequence DataPhylogenySequence Analysis, DNABacterial ProteinsCytotoxinsFolic AcidMembrane ProteinsTryptophan

Identifiers

PMID24417976
PMCPMC3932018
OpenAlexW2124809474

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.