Evidence map›Paper›PMID 9696765›Full record

ArticleJournal of bacteriology1998

Suppression of TGA mutations in the Bacillus subtilis spoIIR gene by prfB mutations.

M L Karow, E J Rogers, P S Lovett, P J Piggot

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.4field-weighted citation impact, top 34% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. RNAViruses · 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

4 authors at 2 institutions in 1 country.

M L KarowDepartment of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, USA.
E J Rogers
P S Lovett
P J Piggot
Temple University · USUniversity of Maryland, Baltimore County · US

Funding

GENE EXPRESSION DURING SPORULATIONR01GM043577 · NIGMS · TEMPLE UNIV OF THE COMMONWEALTH · PI PIGGOT, PATRICK J. · 1990 to 2012
$3.9M
SIGMA 3 AND SIGMAF DURING B SUBTILIS SPORULATIONF32AI009111 · NIAID · TEMPLE UNIVERSITY · PI KAROW, MARGARET L · 1994 to 1995
–
NIAID NIH HHS AI09111NIAID NIH HHS F32 AI009111NIGMS NIH HHS GM42925NIGMS NIH HHS GM43577NIGMS NIH HHS R01 GM043577
6 · The paper itself

Abstract

An unexpectedly high proportion of TGA nonsense mutations was obtained in a collection of chemically induced mutations in the spoIIR locus of Bacillus subtilis. Of 11 different mutations obtained, TGA mutations were found in four codons, whereas only three codons yielded missense mutations. Six suppressors of the TGA mutations were isolated, and five of the suppressing mutations were mapped to the prfB gene encoding protein release factor 2. These are the first mutations shown to map to the B. subtilis prfB locus. The sequence of the prfB gene was completed, and two revisions of the published sequence were made. The five prfB mutations also resulted in suppression of the catA86-TGA mutation to between 19 and 54% of the expression of catA86(+), compared to the readthrough level of 6% in the prfB+ strain. N-terminal sequencing of suppressed catA86-TGA-specified protein demonstrated that the amino acid inserted at UGA because of the prfB1 mutations was tryptophan.

Indexed as

Sigma FactorSuppression, GeneticTranscription FactorsAmino Acid SequenceBacillus subtilisBacterial ProteinsBase SequenceCodon, NonsenseCodon, TerminatorGene Expression Regulation, BacterialGenes, BacterialMolecular Sequence DataSequence Homology, Amino AcidBacterial ProteinsCodon, NonsenseCodon, TerminatorSigma FactorspoIIR protein, Bacillus subtilisspore-specific proteins, BacillusTranscription Factors

Identifiers

PMID9696765
PMCPMC107413
OpenAlexW2109175504

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.