Evidence map›Paper›PMID 20572940›Full record

ArticleMolecular microbiology2010

H-NOX regulation of c-di-GMP metabolism and biofilm formation in Legionella pneumophila.

Hans K Carlson, Russell E Vance, Michael A Marletta

Open access · bronzeAbstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
7.3field-weighted citation impact, top 2% 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

72 citing papers in PubMed, 124 citations in OpenAlex.

  1. Nitric oxide promotes rapid development of motility to accelerate biofilm dispersal inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Article
  3. Unraveling metabolic reprogramming inFrontiers in molecular biosciences · 2025
    Article
  4. Journal of bacteriology · 2024
    Review
  5. Small molecule communication ofMicrobiology and molecular biology reviews : MMBR · 2024
    Review
  6. Article
  7. Ecology ofBiofilm · 2024
    Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. TheApplied and environmental microbiology · 2022
    Article
  18. Review
  19. Review
  20. Review

12 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.

Hans K CarlsonDepartments of ChemistryMolecular and Cell Biology, University of California, Berkeley, CA 94720, USA.
Russell E VanceDepartments of ChemistryMolecular and Cell Biology, University of California, Berkeley, CA 94720, USA.
Michael A MarlettaDepartments of ChemistryMolecular and Cell Biology, University of California, Berkeley, CA 94720, USA.
University of California, Berkeley · US

Funding

Functional and Structural Dissection of Inflammasome ActivationR37AI075039 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI RUSSELL E VANCE · 2018 to 2026
$3.8M
Specificity and in vivo function of the Naip/Nlrc4 inflammasomesR01AI075039 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI VANCE, RUSSELL E · 2008 to 2017
$3.6M
Macrophage transcriptional responses to Legionella pneumophilaR01AI080749 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI VANCE, RUSSELL E · 2009 to 2013
$1.6M
Heme Protein Sensors in ProkaryotesR01GM070671 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI MARLETTA, MICHAEL A. · 2005 to 2008
$1.2M
NIAID NIH HHS AI075039NIAID NIH HHS AI080749NIAID NIH HHS R01 AI075039NIAID NIH HHS R01 AI080749NIAID NIH HHS R37 AI075039NIGMS NIH HHS GM070671NIGMS NIH HHS R01 GM070671
6 · The paper itself

Abstract

unlabelledHaem Nitric oxide/OXygen (H-NOX) binding domains are a family of haemoprotein sensors that are widespread in bacterial genomes, but limited information is available on their function. Legionella pneumophila is the only prokaryote found, thus far, to encode two H-NOX proteins. This paper presents data supporting a role for one of the L. pneumophila H-NOXs in the regulation of biofilm formation. IN SUMMARY: (i) unmarked deletions in the hnox1 gene do not affect growth rate in liquid culture or replication in permissive macrophages; (ii) the Δhnox1 strain displays a hyper-biofilm phenotype; (iii) the gene adjacent to hnox1 is a GGDEF-EAL protein, lpg1057, and overexpression in L. pneumophila of this protein, or the well-studied diguanylate cyclase, vca0956, results in a hyper-biofilm phenotype; (iv) the Lpg1057 protein displays diguanylate cyclase activity in vitro and this activity is inhibited by the Hnox1 protein in the Fe(II)-NO ligation state, but not the Fe(II) unligated state; and (v) consistent with the Hnox1 regulation of Lpg1057, unmarked deletions of lpg1057 in the Δhnox1 background results in reversion of the hyper-biofilm phenotype back to wild-type biofilm levels. Taken together, these results suggest a role for hnox1 in regulating c-di-GMP production by lpg1057 and biofilm formation in response to NO.

Indexed as

Gene Expression Regulation, BacterialBacterial ProteinsBiofilmsCyclic GMPGene DeletionLegionella pneumophilaNitric OxideBacterial Proteinsbis(3',5')-cyclic diguanylic acidCyclic GMPNitric Oxide

Identifiers

PMID20572940
PMCPMC2952683
OpenAlexW2146444149

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.