Evidence map›Paper›PMID 18390624›Full record

ArticleBiophysical journal2008

Order parameters and areas in fluid-phase oriented lipid membranes using wide angle X-ray scattering.

Thalia T Mills, Gilman E S Toombes, Stephanie Tristram-Nagle, Detlef-M Smilgies, Gerald W Feigenson, John F Nagle

Abstract 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 85 papers.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed
–field-weighted citation impact
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

85 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Rational design of lipid nanoparticles for enabling gene therapies.Molecular therapy. Methods & clinical development · 2025
    Review
  7. Article
  8. Article
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  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

25 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

6 authors.

Thalia T MillsDepartment of Physics, Cornell University, Ithaca, New York 14853, USA.
Gilman E S Toombes
Stephanie Tristram-Nagle
Detlef-M Smilgies
Gerald W Feigenson
John F Nagle

Funding

TRAINING IN MOLECULAR PHYSICS OF BIOLOGICAL SYSTEMST32GM008267 · NIGMS · CORNELL UNIVERSITY ITHACA · PI WANG, MICHELLE D. · 1988 to 2021
$9.6M
STRUCTURE OF LIPID BILAYERSR01GM044976 · NIGMS · CARNEGIE-MELLON UNIVERSITY · PI NAGLE, JOHN F, TRISTRAM-NAGLE, STEPHANIE · 1990 to 2014
$3.1M
NIGMS NIH HHS DMR-0225180NIGMS NIH HHS GM 44976NIGMS NIH HHS R01 GM044976NIGMS NIH HHS T32 GM008267
6 · The paper itself

Abstract

We used wide angle x-ray scattering (WAXS) from stacks of oriented lipid bilayers to measure chain orientational order parameters and lipid areas in model membranes consisting of mixtures of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC)/cholesterol and 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC)/cholesterol in fluid phases. The addition of 40% cholesterol to either DOPC or DPPC changes the WAXS pattern due to an increase in acyl chain orientational order, which is one of the main properties distinguishing the cholesterol-rich liquid-ordered (Lo) phase from the liquid-disordered (Ld) phase. In contrast, powder x-ray data from multilamellar vesicles does not yield information about orientational order, and the scattering from the Lo and Ld phases looks similar. An analytical model to describe the relationship between the chain orientational distribution and WAXS data was used to obtain an average orientational order parameter, S(x-ray). When 40% cholesterol is added to either DOPC or DPPC, S(x-ray) more than doubles, consistent with previous NMR order parameter measurements. By combining information about the average chain orientation with the chain-chain correlation spacing, we extended a commonly used method for calculating areas for gel-phase lipids to fluid-phase lipids and obtained agreement to within 5% of literature values.

Indexed as

Membrane FluidityModels, ChemicalModels, MolecularCholesterolComputer SimulationLipid BilayersMolecular ConformationPhase TransitionPhospholipidsX-Ray DiffractionCholesterolLipid BilayersPhospholipids

Identifiers

PMID18390624
PMCPMC2440429

What OpenQuestion holds

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Registered trials

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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.