Evidence map›Paper›PMID 15465855›Full record

ArticleBiophysical journal2004

Lipid-protein interactions of integral membrane proteins: a comparative simulation study.

Sundeep S Deol, Peter J Bond, Carmen Domene, Mark S P Sansom

Abstract readComparative Study
In one paragraph

Article in Biophysical journal, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing 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

38 citing papers in PubMed.

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  12. Structural features and lipid binding domain of tubulin on biomimetic mitochondrial membranes.Proceedings of the National Academy of Sciences of the United States of America · 2017
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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

4 authors.

Sundeep S DeolDepartment of Biochemistry, and Physical and Theoretical Chemistry Laboratory, University of Oxford, Oxford, United Kingdom.
Peter J Bond
Carmen Domene
Mark S P Sansom

Funding

Wellcome Trust
6 · The paper itself

Abstract

The interactions between membrane proteins and their lipid bilayer environment play important roles in the stability and function of such proteins. Extended (15-20 ns) molecular dynamics simulations have been used to explore the interactions of two membrane proteins with phosphatidylcholine bilayers. One protein (KcsA) is an alpha-helix bundle and embedded in a palmitoyl oleoyl phosphatidylcholine bilayer; the other (OmpA) is a beta-barrel outer-membrane protein and is in a dimyristoyl phosphatidylcholine bilayer. The simulations enable analysis in detail of a number of aspects of lipid-protein interactions. In particular, the interactions of aromatic amphipathic side chains (i.e., Trp, Tyr) with lipid headgroups, and "snorkeling" interactions of basic side chains (i.e., Lys, Arg) with phosphate groups are explored. Analysis of the number of contacts and of H-bonds reveal fluctuations on an approximately 1- to 5-ns timescale. There are two clear bands of interacting residues on the surface of KcsA, whereas there are three such bands on OmpA. A large number of Arg-phosphate interactions are seen for KcsA; for OmpA, the number of basic-phosphate interactions is smaller and shows more marked fluctuations with respect to time. Both classes of interaction occur in clearly defined interfacial regions of width approximately 1 nm. Analysis of lateral diffusion of lipid molecules reveals that "boundary" lipid molecules diffuse at about half the rate of bulk lipid. Overall, these simulations present a dynamic picture of lipid-protein interactions: there are a number of more specific interactions but even these fluctuate on an approximately 1- to 5-ns timescale.

Indexed as

Models, ChemicalModels, MolecularBacterial Outer Membrane ProteinsBacterial ProteinsComputer SimulationDiffusionDimyristoylphosphatidylcholineLipid BilayersMembrane FluidityMembrane ProteinsMembranes, ArtificialMotionPhosphatidylcholinesPotassium ChannelsProtein BindingProtein Conformation1-palmitoyl-2-oleoylphosphatidylcholineBacterial Outer Membrane ProteinsBacterial ProteinsDimyristoylphosphatidylcholineLipid BilayersMembrane ProteinsMembranes, ArtificialOMPA outer membrane proteinsPhosphatidylcholinesPotassium Channelsprokaryotic potassium channel

Identifiers

PMID15465855
PMCPMC1304887

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.