Evidence map›Paper›PMID 18836526›Full record

ArticlePloS one2008

Adaptive threonine increase in transmembrane regions of mitochondrial proteins in higher primates.

Yasuhiro Kitazoe, Hirohisa Kishino, Masami Hasegawa, Noriaki Nakajima, Jeffrey L Thorne, Masashi Tanaka

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

11 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
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  9. Genes against aging.The journals of gerontology. Series A, Biological sciences and medical sciences · 2012
    Review
  10. Evolution of the couple cytochrome c and cytochrome c oxidase in primates.Advances in experimental medicine and biology · 2012
    Review
  11. Article
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

6 authors at 5 institutions in 3 countries.

Yasuhiro KitazoeCenter of Medical Information Science, Kochi Medical School, Nankoku, Kochi, Japan. kitazoey@kochi-u.ac.jp
Hirohisa Kishino
Masami Hasegawa
Noriaki Nakajima
Jeffrey L Thorne
Masashi Tanaka
Kochi Medical School Hospital · JPFudan University · CNNorth Carolina State University · USThe University of Tokyo · JPTokyo Metropolitan Institute of Gerontology · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe mitochondrial (mt) gene tree of placental mammals reveals a very strong acceleration of the amino acid (AA) replacement rate and a change in AA compositional bias in the lineage leading to the higher primates (simians), in contrast to the nuclear gene tree. Whether this acceleration and compositional bias were caused by adaptive evolution at the AA level or directional mutation pressure at the DNA level has been vigorously debated. METHODOLOGY/PRINCIPAL

findingsOur phylogenetic analysis indicates that the rate acceleration in the simian lineage is accompanied by a marked increase in threonine (Thr) residues in the transmembrane helix regions of mt DNA-encoded proteins. This Thr increase involved the replacement of hydrophobic AAs in the membrane interior. Even after accounting for lack of independence due to phylogeny, a regression analysis reveals a statistical significant positive correlation between Thr composition and longevity in primates. CONCLUSION/SIGNIFICANCE: Because crucial roles of Thr and Ser in membrane proteins have been proposed to be the formation of hydrogen bonds enhancing helix-helix interactions, the Thr increase detected in the higher primates might be adaptive by serving to reinforce stability of mt proteins in the inner membrane. The correlation between Thr composition in the membrane interior and the longevity of animals is striking, especially because some mt functions are thought to be involved in aging.

Indexed as

AnimalsEvolution, MolecularMembrane ProteinsMitochondriaMitochondrial ProteinsPhylogenyPrimatesProtein Structure, SecondaryThreonineMembrane ProteinsMitochondrial ProteinsThreonine

Identifiers

PMID18836526
PMCPMC2553178
OpenAlexW2013061932

What OpenQuestion holds

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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.