Related Experiment Video
Updated: Jun 10, 2026

07:31
Realistic Membrane Modeling Using Complex Lipid Mixtures in Simulation Studies
Published on: September 1, 2023
ENVIRONMENT: a computational platform to stochastically simulate reacting and self-reproducing lipid compartments
Fabio Mavelli1, Kepa Ruiz-Mirazo
1Chemistry Department, University of Bari, Italy. mavelli@chimica.uniba.it
Physical Biology
|August 13, 2010
Summary
The ENVIRONMENT computational platform simulates protocell dynamics. It uses stochastic kinetics to model reaction networks in heterogeneous conditions, aiding research into the origins of cellular life.
Area of Science:
- Biochemistry
- Computational Biology
- Astrobiology
Background:
- Protocellular systems are key to understanding the origin of life.
- Simulating these systems requires accounting for complex chemical reactions and compartmentalization.
- Heterogeneous conditions, like lipid structures coexisting with aqueous domains, are crucial for early cellular evolution.
Purpose of the Study:
- To introduce and describe the features of the ENVIRONMENT computational platform.
- To demonstrate the application of stochastic kinetics for simulating protocellular systems.
- To bridge theoretical simulations with experimental data in protocell research.
Main Methods:
- Development of the ENVIRONMENT computational platform.
- Stochastic kinetics simulations of reaction networks.
- Modeling of heterogeneous environments including lipid structures and aqueous domains.
- Comparison of simulation results with laboratory experiments.
Main Results:
- The ENVIRONMENT platform enables stochastic simulation of protocellular system dynamics.
- The platform effectively models reaction networks in heterogeneous conditions.
- Simulations provide insights into the stability and evolution of protocells.
- Validation of simulation results against experimental data.
Conclusions:
- The ENVIRONMENT platform is a valuable tool for studying protocell origins.
- Stochastic kinetics is a suitable approach for modeling complex protocellular systems.
- Integrating computational and experimental approaches accelerates research in minimal cell systems.
Related Concept Videos
Asymmetric Lipid Bilayer
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
Assembly of the Lipid Bilayer in the ER
Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
Biosynthesis of Lipids
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis pathway, which...
Membrane Fluidity
Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...
Eukaryotic Compartmentalizations
One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
For example, lysosomes in the animal cells...

