Evidence map›Paper›PMID 29870257›Full record

ArticleThe journal of physical chemistry. B2018

Parameterization of the CHARMM All-Atom Force Field for Ether Lipids and Model Linear Ethers.

Alison N Leonard, Richard W Pastor, Jeffery B Klauda

Abstract read
In one paragraph

Article in The journal of physical chemistry. B, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 38 citations in OpenAlex.

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  15. Accelerating Membrane Simulations with Hydrogen Mass Repartitioning.Journal of chemical theory and computation · 2019
    Article
  16. Interaction of salt with ether- and ester-linked phospholipid bilayers.Biochimica et biophysica acta. Biomembranes · 2019
    Article
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.

Alison N Leonard
Richard W PastorLaboratory of Computational Biology, National Heart, Lung, and Blood Institute , National Institutes of Health , Bethesda , Maryland 20892 , United States.ORCID 0000-0002-2454-5131
University of Maryland, College Park · USNational Institutes of Health · US

Funding

Computer Simulations of Membranes and BiopolymersZIAHL000340 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI PASTOR, RICHARD WALTER · 2009 to 2025
$29.1M
Computer Simulations of Membranes and BiopolymersZ01HL000340 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI PASTOR, RICHARD WALTER · 2006 to 2008
$2.9M
Intramural NIH HHS Z01 HL000340
6 · The paper itself

Abstract

Linear ethers such as polyethylene glycol have extensive industrial and medical applications. Additionally, phospholipids containing an ether linkage between the glycerol backbone and hydrophobic tails are prevalent in human red blood cells and nerve tissue. This study uses ab initio results to revise the CHARMM additive (C36) partial-charge and dihedral parameters for linear ethers and develop parameters for the ether-linked phospholipid 1,2-di- O-hexadecyl- sn-glycero-3-phosphocholine (DHPC). The new force field, called C36e, more accurately represents the dihedral potential energy landscape and improves the densities and free energies of hydration of linear ethers. C36e allows more water to penetrate into a DHPC bilayer, increasing the surface area per lipid compared to simulations carried out with the original C36 ether parameters and improving the overall structural properties obtained from X-ray and neutron scattering. Comparison with an ester-linked DPPC bilayer (1,2-dipalmitoyl- sn-phosphatidylcholine) reveals that the ether linkage increases water organization in the headgroup region. This effect is a likely explanation for the experimentally lower water permeability of bilayers composed of ether-linked lipids.

Indexed as

EthersLipid BilayersMolecular Dynamics SimulationPhospholipid EthersQuantum TheoryWater1,2-dihexadecyl-sn-glycero-3-phosphocholineEthersLipid BilayersPhospholipid EthersWater

Identifiers

PMID29870257
PMCPMC6295153
OpenAlexW2806946242

What OpenQuestion holds

Textmetadata
LicenceTDM
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.