Evidence map›Paper›PMID 11443089›Full record

ArticleJournal of bacteriology2001

Escherichia coli RNA polymerase is the target of the cyclopeptide antibiotic microcin J25.

M A Delgado, M R Rintoul, R N Farías, R A Salomón

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
6.4field-weighted citation impact, top 3% 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

63 citing papers in PubMed, 155 citations in OpenAlex.

  1. Tangled Tail of Mechanically Interlocked Peptides.Journal of the American Chemical Society · 2026
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  15. Article
  16. Generation of Lasso Peptide-Based ClpP Binders.International journal of molecular sciences · 2021
    Article
  17. Article
  18. Antimicrobial Peptides: An Update on Classifications and Databases.International journal of molecular sciences · 2021
    Review
  19. Article
  20. How to harness biosynthetic gene clusters of lasso peptides.Journal of industrial microbiology & biotechnology · 2020
    Review

3 more citing papers are in PubMed but not listed here.

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 3 institutions in 1 country.

M A DelgadoDepartamento de Bioquímica de la Nutrición, Instituto Superior de Investigaciones Biológicas (Consejo Nacional de Investigaciones Cientificas y Técnicas-Universidad Nacional de Tucumán), Chacabuco 461, 4000 San Miguel de Tucumán, Tucumán, Argentina.
M R Rintoul
R N Farías
R A Salomón
Instituto Superior de Investigaciones Biológicas · ARConsejo Nacional de Investigaciones Científicas y Técnicas · ARNational University of Tucumán · AR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Escherichia coli microcin J25 (MccJ25) is a plasmid-encoded, cyclic peptide antibiotic consisting of 21 unmodified amino acid residues. It is primarily active on gram-negative bacteria related to the producer strain, inducing cell filamentation in an SOS-independent way. A mutation causing resistance to MccJ25 was isolated. Genetic analysis indicated that it resided in the rpoC gene, encoding the beta' subunit of RNA polymerase, at 90 min on the E. coli genetic map. The mutation was genetically crossed on to a plasmid containing the wild-type rpoC gene. The presence of the recombinant plasmid conferred complete resistance to otherwise sensitive strains. Nucleotide sequencing of the plasmid-borne, mutant rpoC gene revealed a ACC (Thr)-to-ATC (Ile) change at codon 931, within homology block G, an evolutionarily conserved region in the large subunits of all RNA polymerases. MccJ25 decreased RNA synthesis both in vivo and in vitro. These results point to the RNA polymerase as the target of microcin action. We favor the possibility that the filamentous phenotype induced by MccJ25 results from impaired transcription of genes coding for cell division proteins. As far as we know, MccJ25 is the first peptide antibiotic shown to affect RNA polymerase.

Indexed as

PeptidesAllelesAmino Acid SequenceAnti-Bacterial AgentsBacteriocinsChromosome MappingDNA-Directed RNA PolymerasesDrug Resistance, MicrobialEscherichia coliGenes, BacterialIntracellular FluidLeucineMolecular Sequence DataMutagenesisSequence Analysis, DNATranscription, GeneticAnti-Bacterial AgentsBacteriocinsbeta' subunit of RNA polymeraseDNA-Directed RNA PolymerasesLeucinemicrocinPeptidesRNA polymerase beta subunitUridine

Identifiers

PMID11443089
PMCPMC95349
OpenAlexW2151139044

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.