Evidence map›Paper›PMID 14762207›Full record

ArticleNucleic acids research2004

Recent horizontal intron transfer to a chloroplast genome.

Elena V Sheveleva, Richard B Hallick

Open access · bronzeAbstract read
In one paragraph

Article in Nucleic acids research, 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
1.4field-weighted citation impact, top 20% 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, 60 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Horizontal Gene Transfer Involving Chloroplasts.International journal of molecular sciences · 2021
    Review
  8. Structural Mutations in the Organellar Genomes ofInternational journal of molecular sciences · 2021
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. The endosymbiotic origin, diversification and fate of plastids.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2010
    Review
  16. Post-transcriptional control of chloroplast gene expression.Gene regulation and systems biology · 2009
    Article
  17. Article
  18. Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Elena V ShevelevaDepartment of Biochemistry and Molecular Biophysics, The University of Arizona, 1041 East Lowell Street, Tucson, AZ 85721-0088, USA.
Richard B Hallick
University of Arizona · US

Funding

SPLICING OF GROUP II AND GROUP III INTRONSR01GM035665 · NIGMS · UNIVERSITY OF ARIZONA · PI HALLICK, RICHARD B · 1985 to 2001
$583k
NIGMS NIH HHS GM35665
6 · The paper itself

Abstract

Evidence is presented for the recent, horizontal transfer of a self-splicing, homing group II intron from a cyanobacteria to the chloroplast genome of Euglena myxocylindracea. The psbA gene of E.myxocylindracea was found to contain a single 2566 nt group II intron with a gene in domain 4 for a 575 amino acid maturase. The predicted secondary structure and tertiary interactions of the group II intron, as well as the derived maturase primary sequence, most closely resemble the homing intron of the cyanobacterium Calothrix and the rnl introns of Porphyra purpurea mitochondria, while being only distantly related to all other Euglena plastid introns and maturases. All main functional domains of the intron-encoded proteins of known homing introns are conserved, including reverse transcriptase domains 1-7, the zinc finger domain and domain X. The close relationship with cyanobacterial introns was confirmed by phylogenetic analysis. Both the full-length psbA intron and a Delta-maturase variant self-splice in vitro in two independent assays. The psbA intron is the first example of a self-splicing chloroplast group II intron from any organism. These results support the conclusion that the psbA intron is the result of a recent horizontal transfer into the E.myxocylindracea chloroplast genome from a cyanobacterial donor and should prompt a reconsideration of horizontal transfer mechanisms to account for the origin of other chloroplast genetic elements.

Indexed as

Evolution, MolecularGenomeAmino Acid SequenceAnimalsBase SequenceChloroplastsCyanobacteriaEuglenaGenes, BacterialGenes, ProtozoanGene Transfer, HorizontalIntronsMolecular Sequence DataPhotosystem II Protein ComplexPhylogenyRNA-Directed DNA PolymerasePhotosystem II Protein Complexphotosystem II, psbA subunitRNA-Directed DNA Polymerase

Identifiers

PMID14762207
PMCPMC373349
OpenAlexW2045849360

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.