Evidence map›Paper›PMID 15479949›Full record

ArticleGenome research2004

Psi-Phi: exploring the outer limits of bacterial pseudogenes.

Emmanuelle Lerat, Howard Ochman

Open access · bronzeAbstract readLetter
In one paragraph

Article in Genome research, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing 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

65 citing papers in PubMed, 99 citations in OpenAlex.

  1. Article
  2. Review
  3. The Genome ofInsects · 2024
    Article
  4. Article
  5. The rate and role of pseudogenes of theMicrobial genomics · 2022
    Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Computational Methods for Pseudogene Annotation Based on Sequence Homology.Methods in molecular biology (Clifton, N.J.) · 2021
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. The Divided Bacterial Genome: Structure, Function, and Evolution.Microbiology and molecular biology reviews : MMBR · 2017
    Review
  17. Free-Living EnterobacteriumEvolutionary bioinformatics online · 2017
    Article
  18. Article
  19. Realizing Microbial Evolution.Cold Spring Harbor perspectives in biology · 2016
    Review
  20. Article

5 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 at 1 institution in 1 country.

Emmanuelle LeratDepartment of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 87521, USA.
Howard Ochman
University of Arizona · US

Funding

Genome Erosion in Infectious MicroorganismsR01GM056120 · NIGMS · UNIVERSITY OF ROCHESTER · PI OCHMAN, HOWARD · 1997 to 2007
$1.3M
NIGMS NIH HHS GM56120NIGMS NIH HHS R01 GM056120
6 · The paper itself

Abstract

Because bacterial chromosomes are tightly packed with genes and were traditionally viewed as being optimized for size and replication speed, it was not surprising that the early annotations of sequenced bacterial genomes reported few, if any, pseudogenes. But because pseudogenes are generally recognized by comparisons with their functional counterparts, as more genome sequences accumulated, many bacterial pathogens were found to harbor large numbers of truncated, inactivated, and degraded genes. Because the mutational events that inactivate genes occur continuously in all genomes, we investigated whether the rarity of pseudogenes in some bacteria was attributable to properties inherent to the organism or to the failure to recognize pseudogenes. By developing a program suite (called Psi-Phi, for Psi-gene Finder) that applies a comparative method to identify pseudogenes (attributable both to misannotation and to nonrecognition), we analyzed the pseudogene inventories in the sequenced members of the Escherichia coli/Shigella clade. This approach recovered hundreds of previously unrecognized pseudogenes and showed that pseudogenes are a regular feature of bacterial genomes, even in those whose original annotations registered no truncated or otherwise inactivated genes. In Shigella flexneri 2a, large proportions of pseudogenes are generated by nonsense mutations and IS element insertions, events that seldom produce the pseudogenes present in the other genomes examined. Almost all (>95%) pseudogenes are restricted to only one of the genomes and are of relatively recent origin, suggesting that these bacteria possess active mechanisms to eliminate nonfunctional genes.

Indexed as

Genome, BacterialCodon, NonsenseComputational BiologyDNA Transposable ElementsEscherichia coliEvolution, MolecularPseudogenesSequence Analysis, DNAShigella flexneriSoftwareCodon, NonsenseDNA Transposable Elements

Identifiers

PMID15479949
PMCPMC525686
OpenAlexW2053427917

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.