Evidence map›Paper›PMID 19217871›Full record

ArticleBiophysical journal2009

Structure of functional Staphylococcus aureus alpha-hemolysin channels in tethered bilayer lipid membranes.

Duncan J McGillivray, Gintaras Valincius, Frank Heinrich, Joseph W F Robertson, David J Vanderah, Wilma Febo-Ayala, Ilja Ignatjev, Mathias Lösche, John J Kasianowicz

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
7.3field-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

57 citing papers in PubMed, 146 citations in OpenAlex.

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  18. Membrane Position Dependency of the pKThe Journal of membrane biology · 2018
    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.

Duncan J McGillivrayNational Institute of Standards and Technology (NIST) Center for Neutron Research, Gaithersburg, Maryland, USA.
Gintaras Valincius
Frank Heinrich
Joseph W F Robertson
David J Vanderah
Wilma Febo-Ayala
Ilja Ignatjev
Mathias Lösche
John J Kasianowicz
National Institute of Standards and Technology · US

Funding

STRUCTURAL&FUNCTIONAL INESTIGATIONS OF AB OLIGOMER INTERACTION/SYNTHETIC MEMBRANEP01AG032131 · NIA · CARNEGIE-MELLON UNIVERSITY · PI DESEMO, MARKUS · 2009 to 2011
$1.9M
NCRR NIH HHS 1 R01 RR14182NIA NIH HHS 1 P01 AG032131-01NIA NIH HHS P01 AG032131
6 · The paper itself

Abstract

We demonstrate a method for simultaneous structure and function determination of integral membrane proteins. Electrical impedance spectroscopy shows that Staphylococcus aureus alpha-hemolysin channels in membranes tethered to gold have the same properties as those formed in free-standing bilayer lipid membranes. Neutron reflectometry provides high-resolution structural information on the interaction between the channel and the disordered membrane, validating predictions based on the channel's x-ray crystal structure. The robust nature of the membrane enabled the precise localization of the protein within 1.1 A. The channel's extramembranous cap domain affects the lipid headgroup region and the alkyl chains in the outer membrane leaflet and significantly dehydrates the headgroups. The results suggest that this technique could be used to elucidate molecular details of the association of other proteins with membranes and may provide structural information on domain organization and stimuli-responsive reorganization for transmembrane proteins in membrane mimics.

Indexed as

Staphylococcus aureusBacterial ToxinsGoldHemolysin ProteinsLipid BilayersModels, MolecularPatch-Clamp TechniquesSpectrum AnalysisBacterial ToxinsGoldHemolysin ProteinsLipid Bilayersstaphylococcal alpha-toxin

Identifiers

PMID19217871
PMCPMC2717257
OpenAlexW1994906221

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.