Evidence map›Paper›PMID 16339734›Full record

ReviewMicrobiology and molecular biology reviews : MMBR2005

Alternative sigma factors and their roles in bacterial virulence.

Mark J Kazmierczak, Martin Wiedmann, Kathryn J Boor

Open access · greenAbstract readReview
In one paragraph

Review in Microbiology and molecular biology reviews : MMBR, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 188 papers.

0numbers the graph read from it
0cells of the map it votes in
188citing papers in PubMed
16.5field-weighted citation impact, top 1% 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

188 citing papers in PubMed, 396 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Virulence Regulation inMicroorganisms · 2025
    Review
  9. Review
  10. Article
  11. Article
  12. Evidence for a Putative Regulatory System Consisting of an ECF σInternational journal of molecular sciences · 2025
    Article
  13. Article
  14. Article
  15. Genomic profiling ofFrontiers in microbiology · 2025
    Article
  16. Roles of theFrontiers in cellular and infection microbiology · 2025
    Article
  17. Article
  18. Review
  19. Article
  20. Article

128 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

3 authors at 1 institution in 1 country.

Mark J KazmierczakDepartment of Food Science, Cornell University, 414 Stocking Hall, Ithaca, New York 14853, USA.
Martin Wiedmann
Kathryn J Boor
Cornell University · US

Funding

Sigma B and stress response in Listeria monocytogenesR01AI052151 · NIAID · CORNELL UNIVERSITY ITHACA · PI BOOR, KATHRYN J · 2003 to 2012
$2.7M
NIAID NIH HHS R01 AI052151NIAID NIH HHS R01-AI052151-01A1
6 · The paper itself

Abstract

Sigma factors provide promoter recognition specificity to RNA polymerase holoenzyme, contribute to DNA strand separation, and then dissociate from the core enzyme following transcription initiation. As the regulon of a single sigma factor can be composed of hundreds of genes, sigma factors can provide effective mechanisms for simultaneously regulating expression of large numbers of prokaryotic genes. One newly emerging field is identification of the specific roles of alternative sigma factors in regulating expression of virulence genes and virulence-associated genes in bacterial pathogens. Virulence genes encode proteins whose functions are essential for the bacterium to effectively establish an infection in a host organism. In contrast, virulence-associated genes can contribute to bacterial survival in the environment and therefore may enhance the capacity of the bacterium to spread to new individuals or to survive passage through a host organism. As alternative sigma factors have been shown to regulate expression of both virulence and virulence-associated genes, these proteins can contribute both directly and indirectly to bacterial virulence. Sigma factors are classified into two structurally unrelated families, the sigma70 and the sigma54 families. The sigma70 family includes primary sigma factors (e.g., Bacillus subtilis sigma(A)) as well as related alternative sigma factors; sigma54 forms a distinct subfamily of sigma factors referred to as sigma(N) in almost all species for which these proteins have been characterized to date. We present several examples of alternative sigma factors that have been shown to contribute to virulence in at least one organism. For each sigma factor, when applicable, examples are drawn from multiple species.

Indexed as

Gram-Negative BacteriaGram-Positive BacteriaSigma FactorVirulenceSigma Factor

Identifiers

PMID16339734
PMCPMC1306804
OpenAlexW2162376398

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.