Evidence map›Paper›PMID 34079059›Full record

ArticleCommunications biology2021

Characterisation of a synthetic Archeal membrane reveals a possible new adaptation route to extreme conditions.

Marta Salvador-Castell, Maksym Golub, Nelli Erwin, Bruno Demé, Nicholas J Brooks, Roland Winter, Judith Peters, Philippe M Oger

Open access · goldAbstract read
In one paragraph

Article in Communications biology, 2021. 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, 30 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Bilayer-Forming Lipids Enhance Archaeal Monolayer Membrane Stability.International journal of molecular sciences · 2025
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  7. Article
  8. Review
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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

8 authors at 5 institutions in 3 countries.

Marta Salvador-CastellUniv Lyon, INSA Lyon, CNRS UMR5240, Villeurbanne, France.
Maksym GolubUniversité Grenoble Alpes, CNRS, LiPhy, Grenoble, France.
Nelli ErwinFaculty of Chemistry and Chemical Biology, Technische Universität Dortmund, Dortmund, Germany.
Bruno DeméInstitut Laue Langevin, Grenoble, France.
Nicholas J BrooksDepartment of Chemistry, Imperial College London, London, England.
Roland WinterFaculty of Chemistry and Chemical Biology, Technische Universität Dortmund, Dortmund, Germany.ORCID http://orcid.org/0000-0002-3512-6928
Judith PetersUniversité Grenoble Alpes, CNRS, LiPhy, Grenoble, France. peters@ill.eu.ORCID http://orcid.org/0000-0001-5151-7710
Philippe M OgerUniv Lyon, INSA Lyon, CNRS UMR5240, Villeurbanne, France. philippe.oger@insa-lyon.fr.ORCID http://orcid.org/0000-0001-6298-6870
Centre National de la Recherche Scientifique · FRTU Dortmund University · DEUniversité Claude Bernard Lyon 1 · FRImperial College London · GBInstitut Laue-Langevin · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It has been proposed that adaptation to high temperature involved the synthesis of monolayer-forming ether phospholipids. Recently, a novel membrane architecture was proposed to explain the membrane stability in polyextremophiles unable to synthesize such lipids, in which apolar polyisoprenoids populate the bilayer midplane and modify its physico-chemistry, extending its stability domain. Here, we have studied the effect of the apolar polyisoprenoid squalane on a model membrane analogue using neutron diffraction, SAXS and fluorescence spectroscopy. We show that squalane resides inside the bilayer midplane, extends its stability domain, reduces its permeability to protons but increases that of water, and induces a negative curvature in the membrane, allowing the transition to novel non-lamellar phases. This membrane architecture can be transposed to early membranes and could help explain their emergence and temperature tolerance if life originated near hydrothermal vents. Transposed to the archaeal bilayer, this membrane architecture could explain the tolerance to high temperature in hyperthermophiles which grow at temperatures over 100 °C while having a membrane bilayer. The induction of a negative curvature to the membrane could also facilitate crucial cell functions that require high bending membranes.

Indexed as

AcclimatizationArchaeaExtreme EnvironmentsExtremophilesHot TemperatureLipid BilayersMembrane FluidityMembrane LipidsModels, MolecularMolecular StructureNeutron DiffractionPermeabilityPressureScattering, Small AngleSpectrometry, FluorescenceSqualeneLipid BilayersMembrane LipidssqualaneSqualeneTerpenes

Identifiers

PMID34079059
PMCPMC8172549
OpenAlexW3164263965

What OpenQuestion holds

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LicenceCC BY
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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.