PreprintCited by 31Advanced Electron Microscopy Techniques and ApplicationsProtein Structure and DynamicsLipid Membrane Structure and Behavior

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LipIDens: Simulation assisted interpretation of lipid densities in cryo-EM structures of membrane proteins

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Preprint — published as 10.1038/s41467-023-43392-y

Abstract

Cryo-electron microscopy (cryo-EM) enables the determination of membrane protein structures in native-like environments. Characterising how membrane proteins interact with the surrounding membrane lipid environment is assisted by resolution of lipid-like densities visible in cryo-EM maps. Nevertheless, establishing the molecular identity of putative lipid and/or detergent densities remains challenging. Here we present LipIDens, a pipeline for molecular dynamics (MD) simulation-assisted interpretation of lipid and lipid-like densities in cryo-EM structures. The pipeline integrates the implementation and analysis of multi-scale MD simulations for identification, ranking and refinement of lipid binding poses which superpose onto cryo-EM map densities. Thus, LipIDens enables direct integration of experimental and computational structural approaches to facilitate the interpretation of lipid-like cryo-EM densities and to reveal the molecular identities of protein-lipid interactions within a bilayer environment. The LipIDens code is open-source and embedded within a notebook format to assist automation and usability.

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Metadata

Authors
Ansell, T. B., Song, W., Coupland, C. E., Carrique, L., Corey, R. A., Duncan, A. L., Cassidy, C. K., Geurts, M. M. G., Rasmussen, T., Ward, A. B., Siebold, C., Stansfeld, P. J., & Sansom, M. S. P.
Affiliations
  • University of Oxford (GB)
  • Centre for Human Genetics (GB)
  • University of Bristol (GB)
  • Aarhus University (DK)
  • University of Würzburg (DE)
  • Scripps Research Institute (US)
  • University of Warwick (GB)
Corresponding author
Sansom, Mark S. P.
Venue
Nature Communications
Publisher
openRxiv
Published
2022-07-01
Volume
14
Issue
1
Pages
7774-7774
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4389046776
Cited by
31
References
1
Citations by year
2026: 9 · 2025: 13 · 2024: 8 · 2023: 1
FWCI
2.74
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Warwick Research Archive Portal (University of Warwick) (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Bristol Research (University of Bristol) (submittedVersion, cc-by)
  • Explore Bristol Research (submittedVersion, cc-by)
Funders
  • Ray Thomas Edwards Foundation
  • Wellcome Trust (208361/Z/17/Z, 102164/Z/13/Z)
  • Cancer Research UK (DRCRPG-May23, DRCRPG-May23 / 100002, C20724 / A26752, 26752, A26752, C20724, 100002)
  • Partnership for Advanced Computing in Europe AISBL (2016163984)
  • Medical Research Council (203141/Z/16/Z, MR/S009213/1)
  • Biotechnology and Biological Sciences Research Council (BB/T01508X/1, BB/R002517/1, BB/S003339/1, BB/P01948X/1, BB/R00126X/1, BB/P01948X/2, P01948X, R002517, S003339)
  • H2020 European Research Council (647278)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Structural Biology › Advanced Electron Microscopy Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
Keywords
membrane proteins, protein-lipid interactions, membrane lipid environment
MeSH terms
Membrane Lipids, Membrane Proteins, Protein Conformation, Cryoelectron Microscopy, Molecular Dynamics Simulation

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