Evidence map›Paper›PMID 21951522›Full record

ArticleEnvironmental microbiology2011

Genome of alkaliphilic Bacillus pseudofirmus OF4 reveals adaptations that support the ability to grow in an external pH range from 7.5 to 11.4.

Benjamin Janto, Azad Ahmed, Masahiro Ito, Jun Liu, David B Hicks, Sarah Pagni, Oliver J Fackelmayer, Terry-Ann Smith, Joshua Earl, Liam D H Elbourne and 12 more

Open access · greenAbstract read
In one paragraph

Article in Environmental microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

38 citing papers in PubMed, 82 citations in OpenAlex.

  1. Ecological plasticity ofMicrobiology spectrum · 2026
    Article
  2. Article
  3. HFrontiers in microbiology · 2025
    Review
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  5. Article
  6. Article
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  10. Nature and bioprospecting of haloalkaliphilics: a review.World journal of microbiology & biotechnology · 2020
    Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. A Novel AlkaliphilicFrontiers in microbiology · 2018
    Article
  16. Article
  17. Review
  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

22 authors at 12 institutions in 7 countries.

Benjamin JantoAllegheny General Hospital, Allegheny-Singer Research Institute, Center for Genomic Sciences and Department of Microbiology and Immunology, Drexel University College of Medicine, Allegheny Campus, Pittsburgh, PA 15212, USA.
Azad Ahmed
Masahiro Ito
Jun Liu
David B Hicks
Sarah Pagni
Oliver J Fackelmayer
Terry-Ann Smith
Joshua Earl
Liam D H Elbourne
Karl Hassan
Ian T Paulsen
Anne-Brit Kolstø
Nicolas J Tourasse
Garth D Ehrlich
Robert Boissy
D Mack Ivey
Gang Li
Yanfen Xue
Yanhe Ma
Fen Z Hu
Terry A Krulwich
Icahn School of Medicine at Mount Sinai · USMacquarie University · AUAllegheny General Hospital · USAllegheny-Singer Research Institute · USDrexel University · USChinese Academy of Sciences · CNCzech Academy of Sciences, Institute of Microbiology · CZInstitute of Microbiology · CNSorbonne Université · FRToyo University · JPUniversity of Arkansas at Fayetteville · USUniversity of Oslo · NO

Funding

MOLECULAR ANALYSIS OF PATHOGENS IN OTITIS MEDIA BY PCRR01DC002148 · NIDCD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI EHRLICH, GARTH D. · 1994 to 2017
$6.5M
PROTON COUPLING STRATEGIES IN ALKALIPHILIC BACILLUSR01GM028454 · NIGMS · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI KRULWICH, TERRY ANN · 1985 to 2017
$6.2M
Teaching biomedical and pharmacological trainees to produce FAIR data for AI & ML applicationsT32GM062754 · NIGMS · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI SCHLESSINGER, AVNER · 2001 to 2023
$6.2M
NIDCD NIH HHS DC02148NIDCD NIH HHS R01 DC002148NIGMS NIH HHS GM028454NIGMS NIH HHS R01 GM028454NIGMS NIH HHS T32 GM062754PHS HHS C76HF00659
6 · The paper itself

Abstract

Bacillus pseudofirmus OF4 is an extreme but facultative alkaliphile that grows non-fermentatively in a pH range from 7.5 to above 11.4 and can withstand large sudden increases in external pH. It is a model organism for studies of bioenergetics at high pH, at which energy demands are higher than at neutral pH because both cytoplasmic pH homeostasis and ATP synthesis require more energy. The alkaliphile also tolerates a cytoplasmic pH > 9.0 at external pH values at which the pH homeostasis capacity is exceeded, and manages other stresses that are exacerbated at alkaline pH, e.g. sodium, oxidative and cell wall stresses. The genome of B. pseudofirmus OF4 includes two plasmids that are lost from some mutants without viability loss. The plasmids may provide a reservoir of mobile elements that promote adaptive chromosomal rearrangements under particular environmental conditions. The genome also reveals a more acidic pI profile for proteins exposed on the outer surface than found in neutralophiles. A large array of transporters and regulatory genes are predicted to protect the alkaliphile from its overlapping stresses. In addition, unanticipated metabolic versatility was observed, which could ensure requisite energy for alkaliphily under diverse conditions.

Indexed as

Genome, BacterialHydrogen-Ion ConcentrationAdaptation, PhysiologicalBacillusBacterial ProteinsCell WallCytoplasmDNA, BacterialDNA Transposable ElementsEnergy MetabolismIntronsMolecular Sequence AnnotationOxidative StressPhosphorylationPlasmidsReplication OriginBacterial ProteinsDNA, BacterialDNA Transposable ElementsSodium

Identifiers

PMID21951522
PMCPMC3228905
OpenAlexW1769353633

What OpenQuestion holds

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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.