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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.
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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...
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Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich...
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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.
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Eukaryotic Cell Membranes: Structure, Composition, Research Methods and Computational Modelling.

Anatoly Zhukov1, Valery Popov1

  • 1Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, 127276 Moscow, Russia.

International Journal of Molecular Sciences
|July 14, 2023
PubMed
Summary
This summary is machine-generated.

This study explores eukaryotic cell membrane structure, composition, and modeling. It proposes an electronic database for membrane research, advancing our understanding of cellular organization.

Keywords:
computer modellingglycolipidsintegral membrane proteinslateral heterogeneitylipid raftsmembranesnanodomainsphospholipids

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Area of Science:

  • Cell Biology
  • Biophysics
  • Biochemistry

Background:

  • Eukaryotic cell membranes are complex structures crucial for cellular function.
  • Understanding membrane heterogeneity, lipid rafts, and cytoskeleton interactions is vital.
  • Current methods for studying membrane domains face challenges.

Purpose of the Study:

  • To review current knowledge on eukaryotic cell membrane structure and composition.
  • To discuss modern methodologies for investigating membrane domains.
  • To propose a comprehensive approach for modeling cellular membranes and creating an open-access database.

Main Methods:

  • Literature review of membrane structure, composition, and dynamics.
  • Discussion of simplified models for biomembranes and lipid rafts.
  • Emphasis on computer modeling as a key research tool.

Main Results:

  • Membrane structure is influenced by lipid composition, lateral heterogeneity, and cytoskeleton interactions.
  • Computer modeling offers powerful insights into membrane behavior.
  • A need exists to extend studies from plasma membranes to organelle membranes.

Conclusions:

  • Further research should focus on the detailed composition of diverse organelle membranes.
  • An open-access electronic database integrating modeling results is proposed.
  • This database will facilitate a deeper understanding of cellular membrane organization and function.