Evidence map›Paper›PMID 21544620›Full record

ReviewCurrent genetics2011

Gene fragmentation: a key to mitochondrial genome evolution in Euglenozoa?

Pavel Flegontov, Michael W Gray, Gertraud Burger, Julius Lukeš

Abstract readReview
PubMed Publisher
In one paragraph

Review in Current genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Article
  3. Guide RNA Repertoires in the Main Lineages ofFrontiers in cellular and infection microbiology · 2021
    Article
  4. Article
  5. Article
  6. Article
  7. A single-cell genome reveals diplonemid-like ancestry of kinetoplastid mitochondrial gene structure.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Selective forces for the origin of spliceosomes.Journal of molecular evolution · 2012
    Article
  17. Article
  18. Review
  19. 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

4 authors at 4 institutions in 2 countries.

Pavel FlegontovBiology Centre, Institute of Parasitology, Czech Academy of Sciences, and Faculty of Sciences, University of South Bohemia, 37005, České Budĕjovice, Czech Republic.
Michael W Gray
Gertraud Burger
Julius Lukeš
Dalhousie University · CAInstitute of Parasitology · CZUniversité de Montréal · CAUniversity of South Bohemia in České Budějovice · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phylum Euglenozoa comprises three groups of eukaryotic microbes (kinetoplastids, diplonemids, and euglenids), the mitochondrial (mt) genomes of which exhibit radically different modes of organization and expression. Gene fragmentation is a striking feature of both euglenid and diplonemid mtDNAs. To rationalize the emergence of these highly divergent mtDNA types and the existence of insertion/deletion RNA editing (in kinetoplastids) and trans-splicing (in diplonemids), we propose that in the mitochondrion of the common evolutionary ancestor of Euglenozoa, small expressed gene fragments promoted a rampant neutral evolutionary pathway. Interactions between small antisense transcripts of these gene fragments and full-length transcripts, assisted by RNA-processing enzymes, permitted the emergence of RNA editing and/or trans-splicing activities, allowing the system to tolerate indel mutations and further gene fragmentation, respectively, and leading to accumulation of additional mutations. In this way, dramatically different mitochondrial genome structures and RNA-processing machineries were able to evolve. The paradigm of constructive neutral evolution acting on the widely different mitochondrial genetic systems in Euglenozoa posits the accretion of initially neutral molecular interactions by genetic drift, leading inevitably to the observed 'irremediable complexity'.

Indexed as

Evolution, MolecularGenome, MitochondrialDNA ReplicationEuglenozoaModels, GeneticRNA Editing

Identifiers

PMID21544620
OpenAlexW2054706077

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.