Evidence map›Paper›PMID 7665473›Full record

ArticleJournal of bacteriology1995

Multicopy suppression of cold-sensitive sec mutations in Escherichia coli.

P N Danese, C K Murphy, T J Silhavy

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.7field-weighted citation impact, top 27% 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

11 citing papers in PubMed, 21 citations in OpenAlex.

  1. The Dynamic SecYEG Translocon.Frontiers in molecular biosciences · 2021
    Review
  2. Article
  3. Article
  4. Article
  5. Multitasking SecB chaperones in bacteria.Frontiers in microbiology · 2014
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Linkage map of Escherichia coli K-12, edition 10: the traditional map.Microbiology and molecular biology reviews : MMBR · 1998
    Review
  11. Targeting of GroEL to SecA on the cytoplasmic membrane of Escherichia coli.Proceedings of the National Academy of Sciences of the United States of America · 1998
    Article
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.

P N DaneseDepartment of Molecular Biology, Princeton University, New Jersey 08544-1014, USA.
C K Murphy
T J Silhavy
Princeton University · US

Funding

PREDOCTORAL TRAINING PROGRAM IN GENETICST32GM007388 · NIGMS · PRINCETON UNIVERSITY · PI CRISTEA, ILEANA M. · 1985 to 2022
$27.4M
Microbial Diversity in Mechanisms of Disulfide Bond Formation and ReductionR01GM041883 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI BOYD, DANA · 1989 to 2014
$7.8M
NIGMS NIH HHS GM07388NIGMS NIH HHS GM 14357-02NIGMS NIH HHS GM41883
6 · The paper itself

Abstract

Mutations in the secretory (sec) genes in Escherichia coli compromise protein translocation across the inner membrane and often confer conditional-lethal phenotypes. We have found that overproduction of the chaperonins GroES and GroEL from a multicopy plasmid suppresses a wide array of cold-sensitive sec mutations in E. coli. Suppression is accompanied by a stimulation of precursor protein translocation. This multicopy suppression does not bypass the Sec pathway because a deletion of secE is not suppressed under these conditions. Surprisingly, progressive deletion of the groE operon does not completely abolish the ability to suppress, indicating that the multicopy suppression of cold-sensitive sec mutations is not dependent on a functional groE operon. Indeed, overproduction of proteins unrelated to the process of protein export suppresses the secE501 cold-sensitive mutation, suggesting that protein overproduction, in and of itself, can confer mutations which compromise protein synthesis and the observation that low levels of protein synthesis inhibitors can suppress as well. In all cases, the mechanism of suppression is unrelated to the process of protein export. We suggest that the multicopy plasmids also suppress the sec mutations by compromising protein synthesis.

Indexed as

Escherichia coli ProteinsGene DosageMembrane ProteinsMembrane Transport ProteinsSuppression, GeneticBacterial ProteinsBase Sequencebeta-GalactosidaseBiological TransportChaperonin 10Chaperonin 60Escherichia coliGenetic VectorsMolecular Sequence DataMutagenesisPlasmidsBacterial Proteinsbeta-GalactosidaseChaperonin 10Chaperonin 60Escherichia coli ProteinsMembrane ProteinsMembrane Transport ProteinssecD protein, BacteriaSecD protein, E colisecF protein, BacteriaSecF protein, E coli

Identifiers

PMID7665473
PMCPMC177272
OpenAlexW2132165788

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.