Evidence map›Paper›PMID 9618503›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1998

Secondary absence of mitochondria in Giardia lamblia and Trichomonas vaginalis revealed by valyl-tRNA synthetase phylogeny.

T Hashimoto, L B Sánchez, T Shirakura, M Müller, M Hasegawa

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. 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
16.0field-weighted citation impact, top 1% 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, 150 citations in OpenAlex.

  1. The history of giardiasis.Parasitology research · 2025
    Review
  2. Article
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  6. Review
  7. Article
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  9. Giardia mitosomes and trichomonad hydrogenosomes share a common mode of protein targeting.Proceedings of the National Academy of Sciences of the United States of America · 2005
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Biology of Giardia lamblia.Clinical microbiology reviews · 2001
    Review
  19. Origin of mitochondria in relation to evolutionary history of eukaryotic alanyl-tRNA synthetase.Proceedings of the National Academy of Sciences of the United States of America · 2000
    Article
  20. Aminoacyl-tRNA synthetases, the genetic code, and the evolutionary process.Microbiology and molecular biology reviews : MMBR · 2000
    Review
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

5 authors at 2 institutions in 2 countries.

T HashimotoThe Institute of Statistical Mathematics, 4-6-7 Minami-Azabu, Minato-ku, Tokyo 106, Japan. hasimoto@ism.ac.jp
L B Sánchez
T Shirakura
M Müller
M Hasegawa
The Institute of Statistical Mathematics · JPRockefeller University · US

Funding

BIOCHEMICAL CYTOLOGY OF TRICHOMONAS VAGINALISR01AI011942 · NIAID · ROCKEFELLER UNIVERSITY · PI MULLER, MIKLOS · 1985 to 2003
$1.3M
NIAID NIH HHS AI11942NIAID NIH HHS R01 AI011942
6 · The paper itself

Abstract

Nuclear-coded valyl-tRNA synthetase (ValRS) of eukaryotes is regarded of mitochondrial origin. Complete ValRS sequences obtained by us from two amitochondriate protists, the diplomonad, Giardia lamblia and the parabasalid, Trichomonas vaginalis were of the eukaryotic type, strongly suggesting an identical history of ValRS in all eukaryotes studied so far. The findings indicate that diplomonads are secondarily amitochondriate and give further evidence for such conclusion reached recently concerning parabasalids. Together with similar findings on other amitochondriate groups (microsporidia and entamoebids), this work provides critical support for the emerging notion that no representatives of the premitochondrial stage of eukaryotic phylogenesis exist among the species living today.

Indexed as

Amino Acid SequenceAnimalsCloning, MolecularGiardia lambliaMitochondriaMolecular Sequence DataPhylogenySequence AlignmentTrichomonas vaginalisValine-tRNA LigaseValine-tRNA Ligase

Identifiers

PMID9618503
PMCPMC22662
OpenAlexW2079336822

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.