Evidence map›Paper›PMID 23594437›Full record

ArticleToxins2013

Multiple membrane interactions and versatile vesicle deformations elicited by melittin.

Tomoyoshi Takahashi, Fumimasa Nomura, Yasunori Yokoyama, Yohko Tanaka-Takiguchi, Michio Homma, Kingo Takiguchi

Open access · goldAbstract readComparative Study
In one paragraph

Article in Toxins, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.2field-weighted citation impact, top 10% 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

25 citing papers in PubMed, 42 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Tomoyoshi TakahashiDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan. takahashi.lipo@gmail.com
Fumimasa Nomura
Yasunori Yokoyama
Yohko Tanaka-Takiguchi
Michio Homma
Kingo Takiguchi
Nagoya University · JPTokyo Medical and Dental University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Melittin induces various reactions in membranes and has been widely studied as a model for membrane-interacting peptide; however, the mechanism whereby melittin elicits its effects remains unclear. Here, we observed melittin-induced changes in individual giant liposomes using direct real-time imaging by dark-field optical microscopy, and the mechanisms involved were correlated with results obtained using circular dichroism, cosedimentation, fluorescence quenching of tryptophan residues, and electron microscopy. Depending on the concentration of negatively charged phospholipids in the membrane and the molecular ratio between lipid and melittin, melittin induced the "increasing membrane area", "phased shrinkage", or "solubilization" of liposomes. In phased shrinkage, liposomes formed small particles on their surface and rapidly decreased in size. Under conditions in which the increasing membrane area, phased shrinkage, or solubilization were mainly observed, the secondary structure of melittin was primarily estimated as an α-helix, β-like, or disordered structure, respectively. When the increasing membrane area or phased shrinkage occurred, almost all melittin was bound to the membranes and reached more hydrophobic regions of the membranes than when solubilization occurred. These results indicate that the various effects of melittin result from its ability to adopt various structures and membrane-binding states depending on the conditions.

Indexed as

AnimalsChemical PhenomenaCircular DichroismHydrophobic and Hydrophilic InteractionsInsect ProteinsKineticsLipid BilayersLiposomesMelittenMembrane ProteinsMembranesMicroscopy, Electron, TransmissionPhosphatidylcholinesPhosphatidylglycerolsPhospholipidsProtein Structure, Secondary1,2-dioleoyl-sn-glycero-3-phosphoglycerol1,2-oleoylphosphatidylcholineInsect ProteinsLipid BilayersLiposomesMelittenMembrane ProteinsPhosphatidylcholinesPhosphatidylglycerolsPhospholipidsTryptophan

Identifiers

PMID23594437
PMCPMC3705284
OpenAlexW2034107677

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.