Evidence map›Paper›PMID 21489296›Full record

ArticleGenome biology2011

Discovery of permuted and recently split transfer RNAs in Archaea.

Patricia P Chan, Aaron E Cozen, Todd M Lowe

Open access · goldAbstract read
In one paragraph

Article in Genome biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

34 citing papers in PubMed, 62 citations in OpenAlex.

  1. Review
  2. Archaeal RNA processing and regulation: expanding the functional landscape.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  3. Article
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  7. Structural Basis for tRNA Mimicry by a Bacterial Y RNA.Structure (London, England : 1993) · 2018
    Article
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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.

Patricia P ChanDepartment of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.
Aaron E Cozen
Todd M Lowe
University of California, Santa Cruz · US

Funding

Innovations in RNA Structure PredictionR01HG004002 · NHGRI · UNIVERSITY OF ROCHESTER · PI MATHEWS, DAVID H. · 2007 to 2011
$1.7M
NHGRI NIH HHS HG004002-01A2
6 · The paper itself

Abstract

backgroundAs in eukaryotes, precursor transfer RNAs in Archaea often contain introns that are removed in tRNA maturation. Two unrelated archaeal species display unique pre-tRNA processing complexity in the form of split tRNA genes, in which two to three segments of tRNAs are transcribed from different loci, then trans-spliced to form a mature tRNA. Another rare type of pre-tRNA, found only in eukaryotic algae, is permuted, where the 3' half is encoded upstream of the 5' half, and must be processed to be functional.

resultsUsing an improved version of the gene-finding program tRNAscan-SE, comparative analyses and experimental verifications, we have now identified four novel trans-spliced tRNA genes, each in a different species of the Desulfurococcales branch of the Archaea: tRNA(Asp(GUC)) in Aeropyrum pernix and Thermosphaera aggregans, and tRNA(Lys(CUU)) in Staphylothermus hellenicus and Staphylothermus marinus. Each of these includes features surprisingly similar to previously studied split tRNAs, yet comparative genomic context analysis and phylogenetic distribution suggest several independent, relatively recent splitting events. Additionally, we identified the first examples of permuted tRNA genes in Archaea: tRNA(iMet(CAU)) and tRNA(Tyr(GUA)) in Thermofilum pendens, which appear to be permuted in the same arrangement seen previously in red alga.

conclusionsOur findings illustrate that split tRNAs are sporadically spread across a major branch of the Archaea, and that permuted tRNAs are a new shared characteristic between archaeal and eukaryotic species. The split tRNA discoveries also provide new clues to their evolutionary history, supporting hypotheses for recent acquisition via viral or other mobile elements.

Indexed as

ArchaeaBase SequenceComputational BiologyEukaryotaEvolution, MolecularGenome, ArchaealIntronsMolecular Sequence DataPhylogenyRNA, ArchaealRNA, TransferTrans-SplicingRNA, ArchaealRNA, Transfer

Identifiers

PMID21489296
PMCPMC3218864
OpenAlexW2120932946

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LicenceCC BY
Read underepoch 390

Registered trials

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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.