Evidence map›Paper›PMID 14762009›Full record

ArticleJournal of bacteriology2004

The Bacillus subtilis extracytoplasmic-function sigmaX factor regulates modification of the cell envelope and resistance to cationic antimicrobial peptides.

Min Cao, John D Helmann

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
6.1field-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

75 citing papers in PubMed, 147 citations in OpenAlex.

  1. The phenotypic landscape of the model firmicuteProceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Article
  4. The extracytoplasmic sigma factor σScientific reports · 2025
    Article
  5. Review
  6. Review
  7. Structural Analysis ofMicroorganisms · 2023
    Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Review
  19. Article
  20. Article

15 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

2 authors at 1 institution in 1 country.

Min CaoDepartment of Microbiology, Cornell University, Ithaca, New York 14853-8101, USA.
John D Helmann
Cornell University · US

Funding

STRUCTURAL STUDIES OF BACILLUS SUBTILIS SIGMA FACTORSR01GM047446 · NIGMS · CORNELL UNIVERSITY ITHACA · PI HELMANN, JOHN D · 1992 to 2016
$6.7M
NIGMS NIH HHS GM-47446NIGMS NIH HHS R01 GM047446
6 · The paper itself

Abstract

Bacillus subtilis contains seven extracytoplasmic-function sigma factors that activate partially overlapping regulons. We here identify four additional members of the sigma(X) regulon, pbpX (penicillin-binding protein), ywnJ, the dlt operon (D-alanylation of teichoic acids), and the pss ybfM psd operon (phosphatidylethanolamine biosynthesis). Modification of teichoic acids by esterification with D-alanine and incorporation of phosphatidylethanolamine into the cell membrane have a common consequence: in both cases positively charged amino groups are introduced into the cell envelope. The resulting reduction in the net negative charge of the cell envelope has been previously implicated as a resistance mechanism specific for cationic antimicrobial peptides. Consistent with this notion, we find that both sigX and dltA mutants are more sensitive to nisin than wild-type cells. We conclude that activation of the sigma(X) regulon serves to alter cell surface properties to provide protection against antimicrobial peptides.

Indexed as

Antimicrobial Cationic PeptidesBacillus subtilisBacterial ProteinsBacteriolysisBase SequenceCarrier ProteinsCell MembraneDrug Resistance, BacterialHexosyltransferasesMolecular Sequence DataMuramoylpentapeptide CarboxypeptidaseOperonPenicillin-Binding ProteinsPeptidyl TransferasesPromoter Regions, GeneticRegulonAntimicrobial Cationic PeptidesBacterial ProteinsCarrier ProteinsHexosyltransferasesMuramoylpentapeptide CarboxypeptidasePenicillin-Binding ProteinsPeptidyl TransferasesSigma FactorSigX protein, Bacillus subtilis

Identifiers

PMID14762009
PMCPMC344218
OpenAlexW1989823376

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.