Evidence map›Paper›PMID 15231741›Full record

ArticleGenome research2004

A phylogeny of caenorhabditis reveals frequent loss of introns during nematode evolution.

Soochin Cho, Suk-Won Jin, Adam Cohen, Ronald E Ellis

Abstract read
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 91 papers.

0numbers the graph read from it
0cells of the map it votes in
91citing 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

91 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Sex Determination in Nematode Germ Cells.Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiation · 2022
    Review
  10. Article
  11. Comparative genomics of 10 newEvolution letters · 2019
    Article
  12. Review
  13. Article
  14. Genome research · 2017
    Article
  15. Article
  16. Article
  17. A mitochondrial intron in a verongid sponge.Journal of molecular evolution · 2015
    Article
  18. Article
  19. Article
  20. Article

31 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

4 authors.

Soochin ChoDepartment of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan 48864, USA.
Suk-Won Jin
Adam Cohen
Ronald E Ellis

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since introns were discovered 26 years ago, people have wondered how changes in intron/exon structure occur, and what role these changes play in evolution. To answer these questions, we have begun studying gene structure in nematodes related to Caenorhabditis elegans. As a first step, we cloned a set of five genes from six different Caenorhabditis species, and used their amino acid sequences to construct the first detailed phylogeny of this genus. Our data indicate that nematode introns are lost at a very high rate during evolution, almost 400-fold higher than in mammals. These losses do not occur randomly, but instead, favor some introns and do not affect others. In contrast, intron gains are far less common than losses in these genes. On the basis of the sequences at each intron site, we suggest that several distinct mechanisms can cause introns to be lost. The small size of C. elegans introns should increase the rate at which each of these types of loss can occur, and might account for the dramatic difference in loss rate between nematodes and mammals.

Indexed as

Evolution, MolecularPhylogenyAmino Acid SequenceAnimalsBase SequenceCaenorhabditisCaenorhabditis elegansCaenorhabditis elegans ProteinsChromosome DeletionConserved SequenceExonsGenes, HelminthIntronsMolecular Sequence DatamRNA Cleavage and Polyadenylation FactorsNematodaCaenorhabditis elegans ProteinsCPB-1 protein, C elegansCPB-2 protein, C elegansFOG-3 protein, C elegansmRNA Cleavage and Polyadenylation FactorsNuclear ProteinsRNA-Binding ProteinsTranscription Factors

Identifiers

PMID15231741
PMCPMC442136

What OpenQuestion holds

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Registered trials

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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.