Evidence map›Paper›PMID 10359829›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1999

Unexpected abundance of self-splicing introns in the genome of bacteriophage Twort: introns in multiple genes, a single gene with three introns, and exon skipping by group I ribozymes.

M Landthaler, D A Shub

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

45 citing papers in PubMed, 79 citations in OpenAlex.

  1. Characterization and therapeutic potential of two Kayvirus phages against methicillin-resistant S. aureus in a rat myositis model.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026
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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 1 country.

M LandthalerDepartment of Biological Sciences and Center for Molecular Genetics, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USA.
D A Shub
University at Albany, State University of New York · US

Funding

REGULATION AND EVOLUTION OF PHAGE INTRONS &INTRON-ORFSR01GM037746 · NIGMS · STATE UNIVERSITY OF NEW YORK AT ALBANY · PI SHUB, DAVID A · 1987 to 1998
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NIGMS NIH HHS GM 37746
6 · The paper itself

Abstract

Analysis of RNA that can be labeled with GTP indicates the existence of group I introns in genes of at least three transcriptional classes in the genome of Staphylococcus aureus bacteriophage Twort. A single ORF of 142 amino acids (Orf142) is interrupted by three self-splicing group I introns, providing the first example of a phage gene with multiple intron insertions. Twort Orf142 is encoded in a message that is abundant 15-20 min after infection and is highly similar to a late gene product (Orf8) of the morphologically related Listeria phage A511. The introns in orf142 are spliced in vivo and contain all the conserved features of primary sequence and secondary structure of group I introns in subgroup IA2, which includes the introns in Escherichia coli phage T4 and the Bacillus phages beta22 and SPO1. Introns I2 and I3 in orf142 are highly similar, and their intron insertion sites are closely spaced. The presence of transcripts with a skipped exon between these introns indicates that they may fold into a single active ribozyme resulting in alternative splicing. Alternatively, the cleaved 5' exon preceding I2 may undergo trans splicing to the 3' exon that follows I3. Regardless of the detailed mechanism, these results demonstrate a new means whereby a single gene can give rise to multiple messenger RNAs.

Indexed as

Genes, ViralGenome, ViralIntronsAmino Acid SequenceBacteriophagesBase SequenceMolecular Sequence DataRNA, CatalyticRNA SplicingSequence AlignmentRNA, Catalytic

Identifiers

PMID10359829
PMCPMC22036
OpenAlexW2050188885

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.