Evidence map›Paper›PMID 18199659›Full record

ArticleBiophysical journal2008

Structure of the alamethicin pore reconstructed by x-ray diffraction analysis.

Shuo Qian, Wangchen Wang, Lin Yang, Huey W Huang

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
4.7field-weighted citation impact, top 4% 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

72 citing papers in PubMed, 158 citations in OpenAlex.

  1. Review
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  3. Mechanism-Driven Screening of Membrane-Targeting and Pore-Forming Antimicrobial Peptides.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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12 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

Shuo QianDepartment of Physics and Astronomy, Rice University, Houston, Texas 77251, USA.
Wangchen Wang
Lin Yang
Huey W Huang
Rice University · USBrookhaven National Laboratory · US

Funding

Membrane-active Peptides and ProteinsR01GM055203 · NIGMS · RICE UNIVERSITY · PI HUANG, HUEY W. · 1997 to 2017
$5.0M
NIGMS NIH HHS GM55203NIGMS NIH HHS R01 GM055203
6 · The paper itself

Abstract

We reconstructed the electron density profile of the alamethicin-induced transmembrane pore by x-ray diffraction. We prepared fully hydrated multiple bilayers of alamethicin-lipid mixtures in a condition where pores were present, as established previously by neutron in-plane scattering in correlation with oriented circular dichroism. At dehydrated conditions, the interbilayer distance shortened and the interactions between bilayers caused the membrane pores to become long-ranged correlated and form a periodically ordered lattice of rhombohedral symmetry. To resolve the phase problem of diffraction, we used a brominated lipid and performed multiwavelength anomalous diffraction at the bromine K edge. The result unambiguously shows that the alamethicin pore is of the barrel-stave type consisting of eight alamethicin helices. This pore structure corresponds to the stable pores detected by neutron in-plane scattering in fully hydrated fluid bilayers at high peptide/lipid ratios, which are the conditions at which alamethicin was tested for its antibacterial activity.

Indexed as

X-Ray DiffractionAlamethicinBromineCrystallography, X-RayLipid BilayersModels, ChemicalPhosphatidylcholines1,2-distearoyl(9-10-dibromo)-sn-glycero-3-phosphocholineAlamethicinBromineLipid BilayersPhosphatidylcholines

Identifiers

PMID18199659
PMCPMC2292392
OpenAlexW2067328976

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.