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Membrane Fluidity

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.

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Related Experiment Video

Updated: Jun 26, 2025

Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches

Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches

Published on: September 1, 2023

Modeling membranes in situ.

Chelsea M Brown¹, Siewert J Marrink²

¹Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, the Netherlands. Electronic address: https://twitter.com/chelseabrowncg.

Current Opinion in Structural Biology

|May 14, 2024

Summary

This summary is machine-generated.

Molecular dynamics simulations advance from simple bilayers to complex cell membranes. Future work aims to simulate membrane dynamics in native environments using integrative modeling.

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Last Updated: Jun 26, 2025

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Area of Science:

Biophysics
Computational Biology
Cell Biology

Background:

Molecular dynamics (MD) simulations have evolved significantly, moving beyond simple lipid bilayers.
Current MD models increasingly capture the complexity of real cell membranes, including multicomponent systems.

Purpose of the Study:

To review the progress and challenges in simulating cellular membrane dynamics.
To explore the potential of integrative modeling for in situ simulation of membrane dynamics.

Main Methods:

Review of existing molecular dynamics simulation techniques.
Discussion of integrative modeling approaches for complex biological systems.

Main Results:

MD simulations now represent complex membrane environments effectively.
Significant challenges remain in simulating membrane dynamics in native cellular contexts.

Conclusions:

Integrative modeling offers a promising path toward simulating membrane dynamics in situ.
Achieving whole-cell or organelle-level simulation of membrane dynamics is a future goal.