Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Non-polar interactions between cholesterol and phospholipids: a molecular dynamics simulation study.

Tomasz Róg1, Marta Pasenkiewicz-Gierula

  • 1Department of Biophysics, Faculty of Biotechnology, Jagiellonian University, ul. Gronostajowa 7, Kraków 30-387, Poland.

Biophysical Chemistry
|February 14, 2004
PubMed
Summary

Cholesterol disrupts dimyristoylphosphatidylcholine (DMPC) chain packing in lipid bilayers. Specifically, cholesterol's beta-face methyl groups reduce packing regularity and van der Waals interactions within the bilayer core.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Preventing Age-Related Nuclear Cataract Development - Is Cholesterol the Key?

Investigative ophthalmology & visual science·2026
Same author

Analysis of variant interactions in families with autism points to genes involved in the development of the central nervous system.

PloS one·2025
Same author

Dynamic and Energetic Aspects of Carotenoids In-and-Around Model Lipid Membranes Revealed in Molecular Modelling.

International journal of molecular sciences·2024
Same author

Protecting the Eye Lens from Oxidative Stress through Oxygen Regulation.

Antioxidants (Basel, Switzerland)·2023
Same author

Stacks of monogalactolipid bilayers can transform into a lattice of water channels.

iScience·2023
Same author

Psychedelics promote plasticity by directly binding to BDNF receptor TrkB.

Nature neuroscience·2023

Area of Science:

  • Biophysics
  • Molecular Dynamics
  • Lipid Bilayer Systems

Background:

  • Lipid bilayers are fundamental to cell membranes.
  • Cholesterol modulates membrane properties.
  • Understanding cholesterol-lipid interactions is crucial for membrane function.

Purpose of the Study:

  • To investigate the impact of cholesterol on the packing of dimyristoylphosphatidylcholine (DMPC) chains within a hydrated bilayer.
  • To analyze the influence of cholesterol's structure on van der Waals interactions in the bilayer core.

Main Methods:

  • 15-ns molecular dynamics simulation of a hydrated DMPC-cholesterol (Chol) bilayer.
  • Analysis of an 8-ns trajectory to assess chain packing and interactions.
  • Focus on van der Waals interactions between DMPC and Chol molecules.

Related Experiment Videos

Main Results:

  • Cholesterol incorporation alters DMPC chain packing, particularly on the beta-face side of the cholesterol ring.
  • Methyl groups on cholesterol's beta-face lead to less regular and tighter packing.
  • Van der Waals interactions between cholesterol rings and DMPC chains are weakened compared to pure DMPC bilayers.

Conclusions:

  • Cholesterol's specific structural features, like beta-face methyl groups, significantly influence lipid packing dynamics.
  • The study provides insights into the molecular mechanisms by which cholesterol affects lipid bilayer organization.
  • These findings contribute to a deeper understanding of membrane fluidity and stability.