Evidence map›Paper›PMID 19307604›Full record

ArticleGenetics2009

Minimal effect of ectopic gene conversion among recent duplicates in four mammalian genomes.

Casey L McGrath, Claudio Casola, Matthew W Hahn

Open access · bronzeAbstract read
In one paragraph

Article in Genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
8.9field-weighted citation impact, top 2% 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

24 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
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  3. Frequent nonallelic gene conversion on the human lineage and its effect on the divergence of gene duplicates.Proceedings of the National Academy of Sciences of the United States of America · 2017
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  19. Gene copy-number polymorphism in nature.Proceedings. Biological sciences · 2010
    Review
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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

3 authors at 1 institution in 1 country.

Casey L McGrathSchool of Informatics, Indiana University, Bloomington, IN 47405, USA.
Claudio Casola
Matthew W Hahn
Indiana University Bloomington · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gene conversion between duplicated genes has been implicated in homogenization of gene families and reassortment of variation among paralogs. If conversion is common, this process could lead to errors in gene tree inference and subsequent overestimation of rates of gene duplication. After performing simulations to assess our power to detect gene conversion events, we determined rates of conversion among young, lineage-specific gene duplicates in four mammal species: human, rhesus macaque, mouse, and rat. Gene conversion rates (number of conversion events/number of gene pairs) among young duplicates range from 8.3% in macaque to 18.96% in rat, including a 5% false-positive rate. For all lineages, only 1-3% of the total amount of sequence examined was converted. There is no increase in GC content in conversion tracts compared to flanking regions of the same genes nor in conversion tracts compared to the same region in nonconverted gene-family members, suggesting that ectopic gene conversion does not significantly alter nucleotide composition in these duplicates. While the majority of gene duplicate pairs reside on different chromosomes in mammalian genomes, the majority of gene conversion events occur between duplicates on the same chromosome, even after controlling for divergence between duplicates. Among intrachromosomal duplicates, however, there is no correlation between the probability of conversion and physical distance between duplicates after controlling for divergence. Finally, we use a novel method to show that at most 5-10% of all gene trees involving young duplicates are likely to be incorrect due to gene conversion. We conclude that gene conversion has had only a small effect on mammalian genomes and gene duplicate evolution in general.

Indexed as

Gene ConversionGene DuplicationAnimalsFalse Negative ReactionsFalse Positive ReactionsGenomeGenomicsHumansMacaca mulattaMiceRats

Identifiers

PMID19307604
PMCPMC2691768
OpenAlexW2067097322

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.