Evidence map›Paper›PMID 26701652›Full record

ArticlePloS one2015

The Non-Essential Mycolic Acid Biosynthesis Genes hadA and hadC Contribute to the Physiology and Fitness of Mycobacterium smegmatis.

Stevie Jamet, Nawel Slama, Joana Domingues, Françoise Laval, Pauline Texier, Nathalie Eynard, Annaik Quémard, Antonio Peixoto, Anne Lemassu, Mamadou Daffé and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  4. Microorganisms · 2025
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  5. Review
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  11. Influence of iron deprivation on virulence traits of mycobacteria.The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases
    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

11 authors at 2 institutions in 1 country.

Stevie JametCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Nawel SlamaCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Joana DominguesCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Françoise LavalCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Pauline TexierCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Nathalie EynardCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Annaik QuémardCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Antonio PeixotoCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Anne LemassuCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Mamadou DafféCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Kaymeuang CamCentre National de la Recherche Scientifique, IPBS, UMR 5089, F-31077 Toulouse, France.
Université Fédérale de Toulouse Midi-Pyrénées · FRUniversité Toulouse III - Paul Sabatier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gram positive mycobacteria with a high GC content, such as the etiological agent of tuberculosis Mycobacterium tuberculosis, possess an outer membrane mainly composed of mycolic acids (MAs), the so-called mycomembrane, which is essential for the cell. About thirty genes are involved in the biosynthesis of MAs, which include the hadA, hadB and hadC genes that encode the dehydratases Fatty Acid Synthase type II (FAS-II) known to function as the heterodimers HadA-HadB and HadB-HadC. The present study shows that M. smegmatis cells remain viable in the absence of either HadA and HadC or both. Inactivation of HadC has a dramatic effect on the physiology and fitness of the mutant strains whereas that of HadA exacerbates the phenotype of a hadC deletion. The hadC mutants exhibit a novel MA profile, display a distinct colony morphology, are less aggregated, are impaired for sliding motility and biofilm development and are more resistant to detergent. Conversely, the hadC mutants are significantly more susceptible to low- and high-temperature and to selective toxic compounds, including several current anti-tubercular drugs.

Indexed as

Bacterial ProteinsCell SurvivalMicrobial Sensitivity TestsMycobacterium Infections, NontuberculousMycobacterium smegmatisMycolic AcidsBacterial ProteinsMycolic Acids

Identifiers

PMID26701652
PMCPMC4689354
OpenAlexW2275624278

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.