Evidence map›Paper›PMID 12208852›Full record

ArticleGenes & development2002

RNA chaperone StpA loosens interactions of the tertiary structure in the td group I intron in vivo.

Christina Waldsich, Rupert Grossberger, Renée Schroeder

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
–field-weighted citation impact
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

46 citing papers in PubMed, 86 citations in OpenAlex.

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  20. Compact intermediates in RNA folding.Annual review of biophysics · 2010
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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 2 institutions in 1 country.

Christina WaldsichInstitute of Microbiology and Genetics, University of Vienna, Vienna Biocenter, A-1030 Vienna, Austria.
Rupert Grossberger
Renée Schroeder
University of Vienna · ATVienna Biocenter · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Efficient splicing of the td group I intron in vivo is dependent on the ribosome. In the absence of translation, the pre-mRNA is trapped in nonnative-splicing-incompetent conformations. Alternatively, folding of the pre-mRNA can be promoted by the RNA chaperone StpA or by the group I intron-specific splicing factor Cyt-18. To understand the mechanism of action of RNA chaperones, we probed the impact of StpA on the structure of the td intron in vivo. Our data suggest that StpA loosens tertiary interactions. The most prominent structural change was the opening of the base triples, which are involved in the correct orientation of the two major intron core domains. In line with the destabilizing activity of StpA, splicing of mutant introns with a reduced structural stability is sensitive to StpA. In contrast, Cyt-18 strengthens tertiary contacts, thereby rescuing splicing of structurally compromised td mutants in vivo. Our data provide direct evidence for protein-induced conformational changes within catalytic RNA in vivo. Whereas StpA resolves tertiary contacts enabling the RNA to refold, Cyt-18 contributes to the overall compactness of the td intron in vivo.

Indexed as

Amino Acyl-tRNA SynthetasesBacteriophage T4Base SequenceCodon, NonsenseDNA-Binding ProteinsEscherichia coliEscherichia coli ProteinsIntronsMolecular ChaperonesMolecular Sequence DataMutationNeurospora crassaNucleic Acid ConformationRNA SplicingRNA, ViralThymidylate SynthaseAmino Acyl-tRNA SynthetasesCodon, NonsenseDNA-Binding ProteinsEscherichia coli ProteinsMolecular ChaperonesRNA, ViralStpA protein, E coliThymidylate Synthase

Identifiers

PMID12208852
PMCPMC186668
OpenAlexW1987674601

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.