Evidence map›Paper›PMID 21157514›Full record

ArticlemBio2010

The Hyb hydrogenase permits hydrogen-dependent respiratory growth of Salmonella enterica serovar Typhimurium.

Reena Lamichhane-Khadka, Andrea Kwiatkowski, Robert J Maier

Open access · goldAbstract read
In one paragraph

Article in mBio, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

22 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. The structure of hydrogenase-2 fromThe Biochemical journal · 2018
    Article
  8. Frontiers in microbiology · 2018
    Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Commensal bacteria mediated defenses against pathogens.Current opinion in immunology · 2014
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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.

Reena Lamichhane-KhadkaDepartment of Microbiology, University of Georgia, Athens, Georgia, USA.
Andrea Kwiatkowski
Robert J Maier
University of Georgia · US

Funding

Use of Molecular Hydrogen by Salmonella typhimuriumR21AI073322 · NIAID · UNIVERSITY OF GEORGIA · PI MAIER, ROBERT J. · 2009 to 2010
$408k
NIAID NIH HHS 1R21AI073322NIAID NIH HHS R21 AI073322
6 · The paper itself

Abstract

Salmonella enterica serovar Typhimurium contains three distinct respiratory hydrogenases, all of which contribute to virulence. Addition of H(2) significantly enhanced the growth rate and yield of S. Typhimurium in an amino acid-containing medium; this occurred with three different terminal respiratory electron acceptors. Based on studies with site-specific double-hydrogenase mutant strains, most of this H(2)-dependent growth increase was attributed to the Hyb hydrogenase, rather than to the Hya or Hyd respiratory H(2)-oxidizing enzymes. The wild type strain with H(2) had 4.0-fold greater uptake of (14)C-labeled amino acids over a period of minutes than did cells incubated without H(2). The double-uptake hydrogenase mutant containing only the Hyb hydrogenase transported amino acids H(2) dependently like the wild type. The Hyb-only-containing strain produced a membrane potential comparable to that of the wild type. The H(2)-stimulated amino acid uptake of the wild type and the Hyb-only strain was inhibited by the protonophore carbonyl cyanide m-chlorophenylhydrazone but was less affected by the ATP synthase inhibitor sodium orthovanadate. In the wild type, proteins TonB and ExbD, which are known to couple proton motive force (PMF) to transport processes, were induced by H(2) exposure, as were the genes corresponding to these periplasmic PMF-coupling factors. However, studies on tonB and exbD single mutant strains could not confirm a major role for these proteins in amino acid transport. The results link H(2) oxidation via the Hyb enzyme to growth, amino acid transport, and expression of periplasmic proteins that facilitate PMF-mediated transport across the outer membrane.

Indexed as

Amino AcidsCarbon RadioisotopesCulture MediaHydrogenHydrogenaseMembrane PotentialsMutagenesis, Site-DirectedMutant ProteinsProton-Motive ForceSalmonella typhimuriumStaining and LabelingAmino AcidsCarbon RadioisotopesCulture MediaHydrogenHydrogenaseMutant Proteins

Identifiers

PMID21157514
PMCPMC3000549
OpenAlexW2126279988

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.