Evidence map›Paper›PMID 8278376›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1994

Saturation mutagenesis of a polyadenylation signal reveals a hexanucleotide element essential for mRNA 3' end formation in Saccharomyces cerevisiae.

S Irniger, G H Braus

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 59 citations in OpenAlex.

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  14. Signals sufficient for 3'-end formation of yeast mRNA.Molecular and cellular biology · 1996
    Article
  15. 3'-end-forming signals of yeast mRNA.Molecular and cellular biology · 1995
    Article
  16. Article
  17. Redundant 3' end-forming signals for the yeast CYC1 mRNA.Proceedings of the National Academy of Sciences of the United States of America · 1995
    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

2 authors at 1 institution in 2 countries.

S IrnigerInstitute of Microbiology, Swiss Federal Institute of Technology, Zürich.
G H Braus
École Polytechnique Fédérale de Lausanne · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cis-acting signal sequences required for mRNA 3' end formation are highly conserved and well characterized in higher eukaryotes. However, the situation in the yeast Saccharomyces cerevisiae is still unclear. Several sequences have been proposed which share only limited similarities. One difficulty in identifying yeast polyadenylylation signals might be the presence of redundant signal sequences in the 3' region of yeast genes. To circumvent this problem we have analyzed the heterologous 3' region from cauliflower mosaic virus which contains a yeast polyadenylylation signal. We have performed a saturation mutagenesis of the key element TAG-TATGTA, which is a condensed version of the polyadenylylation signal TAG ... TATGTA ... (TTT) which had previously been proposed. Each of the nine nucleotides was replaced by the three other possible nucleotides and all resulting 1-bp mutants were tested for their capacity to specify mRNA 3' end formation in yeast cells. The first three nucleotides of this condensed sequence are not required, but mutagenesis of the other six nucleotides had distinct effects on mRNA 3' end formation. All mutants that were significantly functional had the sequence TAYRTA, and the sequence TATATA had the best capacity for mRNA 3' end formation. The two thymidine residues at the first and fifth positions are the most essential nucleotides in this sequence. Our results suggest that a degenerate hexanucleotide is essential for mRNA 3' end formation in yeast. This is reminiscent of the conserved polyadenylylation signal in higher eukaryotes, AATAAA.

Indexed as

RNA Processing, Post-TranscriptionalBase SequenceMolecular Sequence DataMutagenesis, Site-DirectedPoly ARNA, FungalRNA, MessengerSaccharomyces cerevisiaeStructure-Activity RelationshipPoly ARNA, FungalRNA, Messenger

Identifiers

PMID8278376
PMCPMC42926
OpenAlexW2004212136

What OpenQuestion holds

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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.