Evidence map›Paper›PMID 19682247›Full record

ArticleMolecular microbiology2009

A mechanism of transposon-mediated directed mutation.

Zhongge Zhang, Milton H Saier

Abstract read
In one paragraph

Article in Molecular microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

26 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Article
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  4. Article
  5. Comprehensive Characterization ofInternational journal of molecular sciences · 2024
    Article
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  10. Article
  11. Histone-like nucleoid structuring (H-NS) protein silences the beta-glucoside (Computational and structural biotechnology journal · 2022
    Article
  12. Article
  13. Transposon-mediated directed mutation in bacteria and eukaryotes.Frontiers in bioscience (Landmark edition) · 2017
    Review
  14. Article
  15. Article
  16. Article
  17. The Bacterial Phosphotransferase System: New Frontiers 50 Years after Its Discovery.Journal of molecular microbiology and biotechnology · 2015
    Article
  18. Review
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Zhongge ZhangDivision of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA.
Milton H SaierDivision of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA.
University of California, San Diego · US

Funding

The Transporter Classification Database (TCDB)R01GM077402 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI SAIER, MILTON H. · 2006 to 2021
$4.7M
Mechanism of Carbohydrate Transport in BacteriaR01GM064368 · NIGMS · UNIVERSITY OF CALIFORNIA SAN DIEGO · PI SAIER, MILTON H. · 2001 to 2004
$1.4M
NIGMS NIH HHS GM 077402NIGMS NIH HHS GM 64368NIGMS NIH HHS R01 GM064368NIGMS NIH HHS R01 GM077402
6 · The paper itself

Abstract

Directed mutation is a proposed process that allows mutations to occur at higher frequencies when they are beneficial. Until now, the existence of such a process has been controversial. Here we describe a novel mechanism of directed mutation mediated by the transposon, IS5 in Escherichia coli. crp deletion mutants mutate specifically to glycerol utilization (Glp(+)) at rates that are enhanced by glycerol or the loss of the glycerol repressor (GlpR), depressed by glucose or glpR overexpression, and RecA-independent. Of the four tandem GlpR binding sites (O1-O4) upstream of the glpFK operon, O4 specifically controls glpFK expression while O1 primarily controls mutation rate in a process mediated by IS5 hopping to a specific site on the E. coli chromosome upstream of the glpFK promoter. IS5 insertion into other gene activation sites is unaffected by the presence of glycerol or the loss of GlpR. The results establish an example of transposon-mediated directed mutation, identify the protein responsible and define the mechanism involved.

Indexed as

DNA Transposable ElementsDNA, BacterialEscherichia coliEscherichia coli ProteinsGene Expression Regulation, BacterialGlycerolMutagenesis, InsertionalMutagenesis, Site-DirectedMutationPromoter Regions, GeneticRepressor ProteinsDNA, BacterialDNA Transposable ElementsEscherichia coli ProteinsGlpR protein, E coliGlycerolRepressor Proteins

Identifiers

PMID19682247
PMCPMC2973706
OpenAlexW2169379277

What OpenQuestion holds

Textmetadata
LicenceTDM
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.