Evidence map›Paper›PMID 17452478›Full record

ArticleAntimicrobial agents and chemotherapy2007

Modular structure of microcin H47 and colicin V.

María F Azpiroz, Magela Laviña

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

23 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Prevalence and activity of class II microcins inApplied and environmental microbiology · 2026
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  18. Microcins inFrontiers in microbiology · 2019
    Review
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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.

María F AzpirozSección Fisiología y Genética Bacterianas, Facultad de Ciencias, Iguá 4225, Montevideo 11.400, Uruguay.
Magela Laviña
Centro Uruguayo de Imagenología Molecular · UY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Microcins are gene-encoded peptide antibiotics produced by enterobacteria that act on strains of gram-negative bacteria. In this work, we concentrated on higher-molecular-mass microcins, i.e., those possessing 60 or more amino acids. They can be subdivided into unmodified and posttranslationally modified peptides. In both cases, they exhibit conserved C-terminal sequences that appear to be characteristic of each subgroup. In the hypothesis that these sequences could correspond to domains, gene fusions between the activity genes for the unmodified microcin colicin V and the modified microcin H47 were constructed. These two microcins differ in their mode of synthesis, uptake, target, and specific immunity. Through this experimental approach, chimeric peptides with exchanged C-terminal sequences were encoded. Cells carrying the fusions in different genetic contexts were then assayed for antibiotic production. Many of them produced antibiotic activities with recombinant properties: the toxicity of one microcin and the mode of uptake of the other. The results led to the identification of a modular structure of colicin V and microcin H47, with the recognition of two domains in their peptide chains: a toxic N-terminal domain and an uptake C-terminal domain. This modular design would be shared by other microcins from each subgroup.

Indexed as

Amino Acid SequenceAnti-Bacterial AgentsAntimicrobial Cationic PeptidesBacteriocinsColicinsConserved SequenceDisulfidesEscherichia coli K12Gene FusionGenes, BacterialMolecular Sequence DataMolecular WeightPatch TestsPeptidesPlasmidsProtein PrecursorsAnti-Bacterial AgentsAntimicrobial Cationic PeptidesBacteriocinsColicinsDisulfidesmicrocin H47PeptidesProtein PrecursorsReceptors, Catecholamine

Identifiers

PMID17452478
PMCPMC1913283
OpenAlexW2147330514

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.