Evidence map›Paper›PMID 15579695›Full record

ArticleGenetics2004

Rapid evolution through gene duplication and subfunctionalization of the testes-specific alpha4 proteasome subunits in Drosophila.

Dara G Torgerson, Rama S Singh

Open access · bronzeAbstract read
In one paragraph

Article in Genetics, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

23 citing papers in PubMed, 55 citations in OpenAlex.

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  10. Gene duplication, tissue-specific gene expression and sexual conflict in stalk-eyed flies (Diopsidae).Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2012
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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

2 authors at 1 institution in 1 country.

Dara G TorgersonDepartment of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada. togerdg@mcmaster.ca
Rama S Singh
McMaster University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gene duplication is an important mechanism for acquiring new genes and creating genetic novelty in organisms. Evidence suggests that duplicated genes are retained at a much higher rate than originally thought and that functional divergence of gene copies is a major factor promoting their retention in the genome. We find that two Drosophila testes-specific alpha4 proteasome subunit genes (alpha4-t1 and alpha4-t2) have a higher polymorphism within species and are significantly more diverged between species than the somatic alpha4 gene. Our data suggest that following gene duplication, the alpha4-t1 gene experienced relaxed selective constraints, whereas the alpha4-t2 gene experienced positive selection acting on several codons. We report significant heterogeneity in evolutionary rates among all three paralogs at homologous codons, indicating that functional divergence has coincided with genic divergence. Reproductive subfunctionalization may allow for a more rapid evolution of reproductive traits and a greater specialization of testes function. Our data add to the increasing evidence that duplicated genes experience lower selective constraints and in some cases positive selection following duplication. Newly duplicated genes that are freer from selective constraints may provide a mechanism for developing new interactions and a pathway for the evolution of new genes.

Indexed as

Evolution, MolecularGene DuplicationAnimalsCodonDrosophilaLikelihood FunctionsMaleModels, GeneticMolecular Sequence DataPolymorphism, GeneticProteasome Endopeptidase ComplexTestisCodonProteasome Endopeptidase Complex

Identifiers

PMID15579695
PMCPMC1448786
OpenAlexW2100017730

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.