Evidence map›Paper›PMID 16679364›Full record

ArticleBiophysical journal2006

Evidence that nystatin channels form at the boundaries, not the interiors of lipid domains.

Carl S Helrich, Jason A Schmucker, Dixon J Woodbury

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.1field-weighted citation impact, top 25% 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

9 citing papers in PubMed, 28 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

3 authors at 2 institutions in 1 country.

Carl S HelrichTurner Laboratory, Department of Physics, Goshen College, Goshen, Indiana, USA. carlsh@goshen.edu
Jason A Schmucker
Dixon J Woodbury
Goshen College · USBrigham Young University · US

Funding

MOLECULAR RECONSTITUTION OF NEUROTRANSMITTER RELEASER01MH050003 · NIMH · WAYNE STATE UNIVERSITY · PI WOODBURY, DIXON J · 2000 to 2004
$1.1M
ION CHANNELS FROM SYNAPTIC VESICLE MEMBRANER29MH050003 · NIMH · WAYNE STATE UNIVERSITY · PI WOODBURY, DIXON J · 1993 to 1997
–
NIMH NIH HHS MH50003NIMH NIH HHS R01 MH050003NIMH NIH HHS R29 MH050003
6 · The paper itself

Abstract

Nystatin (nys) is an antifungal agent that preferentially forms ion channels in membranes containing the sterol, ergosterol (erg). The structure of the nystatin channel is not clear, but it is known that multiple nystatin monomers must aggregate to form channels in a sterol-rich membrane. When nys/erg containing vesicles are fused to a sterol-free bilayer, characteristic spikelike changes in membrane conductance are observed. An abrupt increase in conductance is followed by a decay that is generally stepwise linear and the decay time depends strongly on [erg]. These data are inconsistent with the hypothesis that nys channels form uniformly throughout the membrane and decay independently (which would produce exponential decay). We propose that channels are located at the boundaries of lipid superlattices such that diffusion of erg out of the lattice results in correlated channel decay. This was tested using a statistical mechanical analysis and Monte Carlo simulations, which reveal details of the diffusion process and provide insight into conditions at superlattice boundaries during decay. This analysis predicts the linear decay schemes and the dramatic drop in channel decay time observed at erg mol % = 50. This interpretation also explains puzzling data relating conductance spike height to vesicle diameter.

Indexed as

AnimalsAntifungal AgentsBrainErgosterolLipid BilayersLipidsModels, StatisticalMonte Carlo MethodNystatinProtein Structure, TertiarySterolsTime FactorsAntifungal AgentsErgosterolLipid BilayersLipidsNystatinSterols

Identifiers

PMID16679364
PMCPMC1563755
OpenAlexW2061812227

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.