Evidence map›Paper›PMID 29773800›Full record

ArticleNature communications2018

X-ray structure of a carpet-like antimicrobial defensin-phospholipid membrane disruption complex.

Michael Järvå, Fung T Lay, Thanh Kha Phan, Cassandra Humble, Ivan K H Poon, Mark R Bleackley, Marilyn A Anderson, Mark D Hulett, Marc Kvansakul

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
5.6field-weighted citation impact, top 3% 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

37 citing papers in PubMed, 69 citations in OpenAlex.

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  13. Anti-Cancer Peptides: Status and Future Prospects.Molecules (Basel, Switzerland) · 2023
    Review
  14. Article
  15. Specific Lipid Studies in Complex Membranes by Solid-State NMR Spectroscopy.Chemistry (Weinheim an der Bergstrasse, Germany) · 2022
    Article
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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

9 authors at 1 institution in 1 country.

Michael JärvåDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
Fung T LayDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
Thanh Kha PhanDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
Cassandra HumbleDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
Ivan K H PoonDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
Mark R BleackleyDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.ORCID http://orcid.org/0000-0002-9717-7560
Marilyn A AndersonDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.ORCID http://orcid.org/0000-0002-8257-5128
Mark D HulettDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia. M.Hulett@latrobe.edu.au.
Marc KvansakulDepartment of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia. M.Kvansakul@latrobe.edu.au.ORCID http://orcid.org/0000-0003-2639-2498
La Trobe University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Defensins are cationic antimicrobial peptides expressed throughout the plant and animal kingdoms as a first line of defense against pathogens. Membrane targeting and disruption is a crucial function of many defensins, however the precise mechanism remains unclear. Certain plant defensins form dimers that specifically bind the membrane phospholipids phosphatidic acid (PA) and phosphatidylinositol 4,5-bisphosphate, thereby triggering the assembly of defensin-lipid oligomers that permeabilize cell membranes. To understand this permeabilization mechanism, here we determine the crystal structure of the plant defensin NaD1 bound to PA. The structure reveals a 20-mer that adopts a concave sheet- or carpet-like topology where NaD1 dimers form one face and PA acyl chains form the other face of the sheet. Furthermore, we show that Arg39 is critical for PA binding, oligomerization and fungal cell killing. These findings identify a putative defensin-phospholipid membrane attack configuration that supports a longstanding proposed carpet mode of membrane disruption.

Indexed as

Candida albicansCell MembraneCell Membrane PermeabilityCrystallography, X-RayDefensinsImmunity, InnateMicrobial Sensitivity TestsMutagenesisNicotianaPhosphatidic AcidsPlant DiseasesPlant ProteinsProtein BindingProtein MultimerizationRecombinant ProteinsDefensinsPhosphatidic AcidsPlant ProteinsRecombinant Proteins

Identifiers

PMID29773800
PMCPMC5958116
OpenAlexW2804510359

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.