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Membrainy: a 'smart', unified membrane analysis tool.

Matthew Carr1, Cait E MacPhee1

  • 1Institute for Condensed Matter and Complex Systems, School of Physics and Astronomy, The University of Edinburgh, Mayfield Road, Edinburgh, UK.

Source Code for Biology and Medicine
|June 11, 2015
PubMed
Summary
This summary is machine-generated.

Membrainy is a new computational tool for analyzing molecular dynamics simulations of biological membranes. It offers a wide range of analyses for lipid bilayers, improving upon existing software and validated by experimental data.

Keywords:
Area per lipidAsymmetric bilayerBilayer/Leaflet thicknessDouble bilayerHeadgroup orientationsLipid flip-floppingMembrane analysisMixing/Demixing entropyMolecular dynamicsOrder parameters

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Area of Science:

  • Computational biology
  • Biophysics
  • Molecular dynamics simulations

Background:

  • Molecular Dynamics (MD) simulations are crucial for studying biological membrane properties and interactions.
  • Lipid bilayer properties are significantly influenced by interactions with proteins, peptides, and potentials.
  • Existing software often lacks comprehensive analysis tools for MD membrane simulations.

Purpose of the Study:

  • To introduce Membrainy, a unified computational tool for comprehensive membrane analysis.
  • To provide a user-friendly platform for analyzing molecular dynamics simulations of lipid bilayers.
  • To offer a broad spectrum of analytical techniques for membrane property investigation.

Main Methods:

  • Membrainy integrates multiple analytical techniques for membrane simulation data.
  • The tool analyzes acyl chain order parameters, surface/thickness maps, and headgroup orientations.
  • It also quantifies gel percentage, transmembrane voltage, area per lipid, and lipid mixing/demixing entropy.

Main Results:

  • Membrainy's analytical components were tested on diverse lipid bilayer systems.
  • Performance was found to be comparable or superior to existing software.
  • Results for techniques without direct software comparisons were validated using experimental data.

Conclusions:

  • Membrainy is an intelligent, user-friendly tool for membrane analysis.
  • It supports various input formats, force fields, and bilayer configurations (single, double, asymmetric).
  • The software requires minimal user input, installation, or configuration for operation.