Evidence map›Paper›PMID 19164152›Full record

ArticleAntimicrobial agents and chemotherapy2009

Genetic analysis of factors affecting susceptibility of Bacillus subtilis to daptomycin.

Anna-Barbara Hachmann, Esther R Angert, John D Helmann

Abstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed
17.3field-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

94 citing papers in PubMed, 170 citations in OpenAlex.

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  8. Identification ofJournal of bacteriology · 2024
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  16. Isolation of Persister Cells ofInternational journal of molecular sciences · 2021
    Article
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  19. Review
  20. Review

34 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.

Anna-Barbara HachmannDepartment of Microbiology, Wing Hall, Cornell University, Ithaca, New York 14853-8101, USA.
Esther R Angert
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-047446NIGMS NIH HHS R01 GM047446
6 · The paper itself

Abstract

Daptomycin is the first of a new class of cyclic lipopeptide antibiotics used against multidrug-resistant, gram-positive pathogens. The proposed mechanism of action involves disruption of the functional integrity of the bacterial membrane in a Ca(2+)-dependent manner. We have used transcriptional profiling to demonstrate that treatment of Bacillus subtilis with daptomycin strongly induces the lia operon including the autoregulatory LiaRS two-component system (homologous to Staphylococcus aureus VraSR). The lia operon protects against daptomycin, and deletion of liaH, encoding a phage-shock protein A (PspA)-like protein, leads to threefold increased susceptibility. Since daptomycin interacts with the membrane, we tested mutants with altered membrane composition for effects on susceptibility. Deletion mutations of mprF (lacking lysyl-phosphatidylglycerol) or des (lipid desaturase) increased daptomycin susceptibility, whereas overexpression of MprF decreased susceptibility. Conversely, depletion of the cell for the anionic lipid phosphatidylglycerol led to increased resistance. Fluorescently labeled daptomycin localized to the septa and in a helical pattern around the cell envelope and was delocalized upon the depletion of phosphatidylglycerol. Together, these results indicate that the daptomycin-Ca(2+) complex interacts preferentially with regions enriched in anionic phospholipids and leads to membrane stresses that can be ameliorated by PspA family proteins.

Indexed as

Anti-Bacterial AgentsBacillus subtilisBacterial ProteinsCell WallCluster AnalysisDaptomycinHeat-Shock ProteinsMembrane LipidsMicrobial Sensitivity TestsOperonRegulonSigma FactorAnti-Bacterial AgentsBacterial ProteinsDaptomycinHeat-Shock ProteinsLiaRS protein, Bacillus subtilisMembrane Lipidsphage shock protein, BacteriaSigma Factor

Identifiers

PMID19164152
PMCPMC2663116
OpenAlexW2128403490

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.